The Theoretical Fastest Man and Woman

To find the absolute biological limits of the 100-meter sprint, we have to look closely at physics and biomechanics.

Statistical and mathematical modeling by biomechanists suggests the absolute human biological floor for a bipedal 100m sprint sits somewhere around 9.45 to 9.48 seconds.

Here is how our physiological limits dictate that limit, followed by an estimate of how height alters the equation.

The Variables of Human Limitation

• Energy Generation: The 100-meter dash is powered almost entirely by the ATP-PCr (phosphagen) system. It requires zero oxygen to start but drains completely in about 5 to 8 seconds. After that, the body falls back on fast glycolysis, causing a slight drop in top speed over the last 20 meters.
• The Contact Time Limit: Surprisingly, elite sprinters don’t swing their legs much faster than an average person. The real limit is ground contact time. At peak velocity, an elite runner’s foot is only on the ground for about 0.08 to 0.09 seconds.
• Muscle Strength & Force: To run at world-record speeds, the human body must apply massive force—about 4.5 times its own body weight—down into the track within that tiny 0.08-second window. The biological ceiling isn’t how much force our muscles can generate, but rather how fast our fast-twitch (Type IIx) muscle fibers can contract to deliver that force before the foot leaves the ground.

Height, Weight, and Sprint Mechanics

When modeling the “perfect” sprinter across different heights, we have to balance two competing physical laws:

1. Stride Length (The Tall Advantage): Taller sprinters have longer limbs, covering more distance per step. They take fewer strides to complete the 100m (e.g., Usain Bolt took 41 steps; average elites take 44–47).
2. Inertia and Frequency (The Short Advantage): Shorter sprinters have lower mass and shorter limbs, meaning less rotational inertia. They can accelerate out of the blocks much faster and maintain a higher stride frequency (cadence).

The estimates below assume an absolute peak genetic freak at each height—someone with maximum possible fast-twitch fiber density, optimal power-to-weight ratio, perfect technique, and a legal +2.0 m/s tailwind.

Below 5’8″, a runner simply cannot cover enough ground per stride to reach the absolute mathematical limit of human speed, no matter how fast their legs churn. Above 6’8″, the sheer mass and mechanical disadvantage of moving such long levers prevents the rapid force application required in a tenth of a second.

The absolute fastest a human being could theoretically ever cover 100 meters sits right around 9.44 seconds, most likely achieved by someone standing between 6’2″ and 6’6″.

Women

To model the absolute biological limit for female sprinters, we have to adjust the physical equation for three major physiological differences: lower natural testosterone, distinct pelvic anatomy, and different scaling in height and mass.

Statistical and biomechanical modeling suggests the absolute human biological floor for a female 100m sprint sits right around 10.15 to 10.20 seconds.

Here is how those unique variables alter the mechanics of speed, followed by the height-based estimates.

The Variables of Female Limitation

• The Testosterone Factor (Power-to-Mass): On average, adult women have roughly 10% of the circulating testosterone levels of men. This directly impacts muscle mass development, particularly the density and cross-sectional area of Type IIx fast-twitch muscle fibers. Less fast-twitch density means a lower rate of force development (RFD)—women cannot punch the ground with the same explosive force per kilogram of body weight as men.
• Ground Force Limits: While elite men hit the track with about 4.5 times their body weight in force, elite women average closer to 3.5 to 3.8 times their body weight. Because their ground contact time is slightly longer (around 0.09 to 0.10 seconds), their top-end velocity caps out slightly earlier.
• Pelvic Anatomy & Stride Efficiency: Women typically have a wider pelvis relative to height (the Q-angle). This anatomical trait is essential for childbearing but alters the angle of the femur relative to the knee and track. From a pure physics standpoint, a wider pelvic structure slightly increases lateral hip movement, meaning a fraction of energy that could be used for forward propulsion is lost to stabilization.

Height, Mass, and the Female Sprint Profile

Because women are shorter on average, the “sweet spot” for mechanical efficiency shifts downward compared to men. A 6-foot woman is a much rarer statistical outlier than a 6-foot man, and at the extreme heights (above 6’4″), the drop-off in stride frequency happens much faster due to lower relative muscle mass to move those long limbs.

The estimates below assume a genetic outlier at each height—possessing the highest possible natural fast-twitch percentage, elite power-to-weight ratio, and perfect execution under legal wind limits (+2.0 m/s).

For women, the absolute fastest theoretical time sits at 10.16 seconds, likely achieved by a sprinter standing between 5’8″ and 5’11”.

Below 5’4″, the mechanical limit of stride length acts as a barrier to breaking the 10.20-second mark, regardless of turnover speed. Above 6’2″, the lack of absolute muscular force relative to limb length slows down leg turnover too much to optimize a race as short as the 100 meters.

How Fast Could Elite Women Sprinters Go

Assuming maximum legal wind assistance (+2.0 m/s), absolute peak reaction time out of the blocks, perfect track conditions, and zero residual fatigue, here is the theoretical ceiling for some specific athletes.

Elaine Thompson-Herah

• Height: 5’6″ (1.68 m)
• Current Personal Best: 10.54 seconds (Second-fastest in history)
• Biomechanical Profile: She possesses arguably the most efficient sprint mechanics in history when healthy. Her transition from the drive phase to maximum velocity is nearly flawless, and she maintains an incredibly high stride frequency while standing at what has historically been considered the ideal height for female sprinting.
• Theoretical Peak Limit: 10.31 seconds

The Math: Her 10.54 was run with a +0.9 m/s wind. If she hit that exact same form with a maximum legal +2.0 m/s tailwind and cut her reaction time down to a razor-sharp 0.115 seconds, physics dictates she could drop deep into the 10.3s. In an absolute flawless simulation where she hits a perfect maximum velocity phase without the slightest deceleration over the final 10 meters, her biological height-to-force ratio maxes out right around low 10.3.

Julien Alfred

• Height: 5’7″ (1.70 m)
• Current Personal Best: 10.72 seconds
• Biomechanical Profile: She has phenomenal horizontal force application, meaning her explosive power out of the blocks is elite. Standing slightly taller than the historical average, she has a long, powerful stride that doesn’t sacrifice cadence.
• Theoretical Peak Limit: 10.34 seconds

The Math: Her 10.72 Olympic gold-winning run was achieved on a wet track with a mild +1.0 m/s wind. A dry track, a max legal +2.0 m/s wind, and an optimized, fully uninhibited top-end speed phase would easily convert her current mechanical capabilities into the mid-to-low 10.3s. Under “god-mode” conditions with zero friction and peak ATP-PCr efficiency, her height grants her enough stride length to realistically threaten a 10.3s.

Alfred’s unique blend of 60m explosive power and 5’7″ leverage creates a terrifying race profile.

Shericka Jackson

• Height: 5’8″ (1.73 m)
• Current Personal Best: 10.65 seconds
• Biomechanical Profile: Coming from a 400m background, her speed endurance is legendary. At 5’8″, she is taller than most traditional female short-sprinters. While her block clearance isn’t always the fastest, her long levers generate terrifying top-end speed once she is fully upright. She eats up more track per step than nearly anyone in the field.
• Theoretical Peak Limit: 10.33 seconds

The Math: Because her top-end speed is so high (evidenced by her 21.41-second 200m mastery), if she were to execute a perfect start that matches her closing speed, she possesses the height and structural force capability to out-stride shorter competitors. In perfect conditions, her longer limbs give her a slightly higher theoretical ceiling over 100m than a shorter pure accelerator.

Dina Asher-Smith

• Height: 5’5″ (1.64 m)
• Biomechanical Profile: Asher-Smith sits right next to Elaine Thompson-Herah (5’6″) in that classic mechanical sweet spot for female sprinters. While she is incredibly fast, her body has never generated or sustained the raw, violent power output required to cross into the 10.6s or 10.5s in competition. While her start and drive phases are highly explosive due to her rapid leg turnover, her mechanical challenge occurs in the final 30 meters of a 100m race. Taller sprinters can maintain velocity by coasting on their massive stride lengths. For Asher-Smith, keeping her top-end speed requires her to maintain a relentlessly high turnover, which demands immense neural energy and makes her highly sensitive to tightening up if she experiences fatigue.
• Theoretical Peak Limit: 10.51 seconds

She achieved her real-world 10.83 baseline in completely dead air (+0.1 m/s), a perfect, maximum-tailwind climate benefits her theoretical limit drastically, allowing her physiological mechanics to scale down to a high 10.4 or low 10.5.

Daryll Neita

• Height: 5’8″ (1.72 m)
• Biomechanical Profile: Another taller competitor with exceptional physical power. She has shown massive leaps in her ability to hold top-end speed.
• Theoretical Peak Limit: 10.60 seconds

At nearly 5’8″, her limitation has historically been the first 30 meters. If her start mechanics perfectly aligned with her peak stride length, her frame is built to sustain massive force down into the track.

Sha’Carri Richardson

• Height: 5’1″ (1.55 m).
• Current Personal Best: 10.65 seconds.
• Biomedical Profile: At full flight, Richardson can turn her stride over at an astonishing rate of nearly 5.0 steps per second. Because shorter legs cover less distance per stride, she has to compensate by hitting the ground with violent force. Her rate of force development (RFD) is legendary; she spends less time on the ground than almost anyone else (~0.083 seconds), punching her weight into the track instantly to launch herself forward.
• Theoretical Peak Limit: 10.51 seconds

The only reason her theoretical limit doesn’t match Florence Griffith-Joyner’s world record is absolute skeletal length. At 5’1″, to run a 10.4, she would have to exceed the physical speed limit of human nerve conduction to spin her legs any faster.

Melissa Jefferson-Wooden

• Height: 5’4″ (1.63 m)
• Current Personal Best: 10.61 seconds
• Biomechanical Profile: Jefferson-Wooden sits in the definitive “sweet spot” of women’s sprinting. At 5’4″, she possesses slightly longer levers than Richardson, giving her a massive mechanical advantage in the transition and maximum velocity phases of the race. Because she relies heavily on elastic energy return (think of her tendons acting like high-tension springs bouncing off the track), she experiences almost zero deceleration in the final 20 meters. This structural efficiency is exactly what allowed her to capture her individual World Championship sprint titles.
• Theoretical Peak Limit: 10.35 seconds

Her baseline is already a blistering 10.61, when you simulate her mechanics under a maximum legal tailwind (+2.0 m/s) and optimize her block reaction time to a flawless 0.115 seconds, her combined leverage and elasticity drop her theoretical floor to a spectacular 10.35.

No matter the height, the absolute barrier for the female anatomy under these current physiological constraints hovers around the 10.15 to 10.20 mark. To get there, a taller sprinter (5’8″ to 5’10”) would need the rapid start of a short sprinter combined with the unyielding top-end speed endurance of a 200m champion.

Why Elaine Gets the Edge over Melissa and Shericka

If Melissa and Elaine ran their perfect simulated races side by side, the timeline explains why Elaine takes the edge:

• 0m–30m (The Start & Drive Phase): Melissa’s superb power-to-weight ratio and rapid early-drive transition let her mirror Elaine step-for-step out of the blocks. They rise into an upright position nearly dead even.
• 30m–60m (Maximum Velocity): This is where Elaine’s unique biomechanical advantage takes over. While Melissa has elite stride elasticity, Elaine possesses arguably the most efficient elastic tendon recoil in track history. At full flight, she covers slightly more distance per stride with an effortlessly smooth hip position.
• 60m–100m (The Closing Phase): Both athletes excel at maintaining speed late in the race due to exceptional core stabilization. However, because Elaine can generate a higher peak velocity mid-race, she carries greater momentum across the line.

Melissa pushes her to the absolute brink, but Elaine’s foundational power baseline—proven by running a 10.61 into a headwind—means her absolute peak physical ceiling scales down to a near-human limit of 10.31 seconds, securing her the theoretical victory.

Elaine over Sherica

The difference in their estimated absolute peak limits (10.31s for Elaine vs. 10.33s for Shericka) comes down to a fundamental trade-off in sprint biomechanics: how fast you can accelerate out of the blocks versus how well you can maintain top speed at the end.

Even though Shericka Jackson is taller and possesses a higher absolute top-end speed over a longer distance, Elaine Thompson-Herah’s specific physical structure gives her a higher statistical advantage in a race as short as the 100 meters.

1. The Real Estate Problem: 100m vs. 200m

The 100-meter dash is too short for a pure top-end speed specialist to fully make up for a slower start.

• Elaine’s Advantage: Standing at 5’6″, Elaine sits perfectly in that mechanical “sweet spot.” Her shorter limbs allow for less rotational inertia, meaning she can cycle her legs at a much higher stride frequency (cadence) during the first 30 to 40 meters. She hits her maximum velocity much earlier in the race.
• Shericka’s Challenge: Coming from a 400m background and standing at 5’8″, Shericka has longer levers. While those long limbs are a massive weapon in the 200m (where she has run a historic 21.41), they require more muscular torque to unfold and accelerate from a dead stop. In a 100m race, by the time Shericka fully unfolds her frame and hits her terrifying top gear, she is already running out of track.

2. Base Personal Bests and Wind Calibration

When calculating a theoretical ceiling, we have to look at what they have already proven their bodies can handle under real-world physics:

• Elaine’s 10.54: Run with only a +0.9 m/s wind. If you mathematically scale that exact performance up to the maximum legal tailwind limit of +2.0 m/s, and slice her block reaction time down to a perfect 0.115 seconds, her body has already proven the physical capacity to drop into the low 10.3s.
• Shericka’s 10.65: Run with a +1.0 m/s wind. While an incredible time (tying her as the 6th fastest woman in history), she starts from a slightly lower baseline over this specific distance. Scaling her 10.65 with a maximum legal wind and a flawless start drops her into the mid 10.3s, but because her stride frequency caps out lower than Elaine’s, she hits a biological ceiling just a fraction of a second sooner.

If the race were 150 meters, Shericka Jackson’s theoretical limit would easily surpass Elaine’s because her long stride length would dominate the back half. But in a strict 100-meter distance, the explosive, rapid turnover allowed by Elaine’s slightly shorter frame gives her the higher absolute performance ceiling.

Shericka Over The Americans

If we put a peak, perfectly optimized Shericka on the track against Melissa and Sha’Carri, her biomechanics dictate a completely different race structure:

• 0m–30m (The Drive Phase): Because Sha’Carri (5’1″) and Melissa (5’4″) have shorter levers, they possess much lower rotational inertia. Out of the blocks, they cycle their legs at a hyper-frequency that leaves the taller Shericka trailing by a step or two.
• 30m–60m (The Transition): Once Shericka’s 5’8″ frame fully unfolds and she stands upright, her 400-meter strength and massive stride length begin to eat up the track. While Sha’Carri is spinning her legs at 5.0 steps per second, Shericka is striking the ground with massive vertical force, covering nearly 2.5 meters per stride.
• 60m–100m (The Top-End Fly Zone): This is where Shericka dominates. Because her long tendons act like heavy-duty steel springs, she maintains her top gear better than the shorter-lever athletes. In a maximum +2.0 m/s tailwind, her aerodynamics and massive stride length allow her to completely fly past Sha’Carri and edge out Melissa right at the tape.

The Specifics for The Men

Applying the mathematical formulas of peak physics—including maximum legal wind (+2.0 m/s), an elite reaction time (~0.115s), optimized track friction, and perfect ATP-PCr energy system efficiency—reveals a clear picture of what the world’s top men could run under absolute “god-mode” conditions.

When looking at the current vanguard of men’s sprinting heading into major global championships, the theoretical ceilings are incredibly low because their real-world baselines are already hovering near the absolute limits of human physiology.

Kishane Thompson

• Height: 6’1″ (1.85 m) | Weight: ~187 lbs (85 kg)
• Personal Best: 9.75 seconds
• Biomechanical Profile: He is built like the absolute blueprint of a modern power-sprinter. At 6’1″, he possesses the muscle cross-sectional density to exert massive force down into the track while maintaining shorter, highly efficient limb levers than someone Usain Bolt’s height. His stride frequency is remarkably high for his size, and his drive phase is devastatingly efficient.
• Theoretical Peak Limit: 9.56 seconds

The Math: When he clocked his 9.75 personal best at the 2025 Jamaican Championships, he did it with a mild +0.8 m/s wind and wasn’t even maximizing his depth out of the blocks. If you scale that performance up to a max legal +2.0 m/s tailwind, sharpen his reaction time, and assume a race where he doesn’t shut down or tighten up even a fraction over the line, his physical frame is built to sustain a velocity that firmly threatens the 9.5-second barrier.

Oblique Seville

• Height: 5’7″ (1.70 m) | Weight: ~160 lbs (73 kg)
• Personal Best: 9.77 seconds
• Biomechanical Profile: He is an absolute masterclass in low-inertia physics. Coached by Glen Mills (the mastermind behind Bolt), Seville maximizes his shorter frame with a blindingly fast stride turnover. His ground contact time is microscopic, meaning he cycles his legs faster than almost anyone else alive. He hits top gear incredibly early in the race.
• Theoretical Peak Limit: 9.62 seconds

The Math: His 9.77 personal best shows that smaller sprinters can still apply elite force levels relative to mass. However, at 5’7″, he hits a mechanical boundary on stride length. Even with a perfect +2.0 m/s tailwind and an unbeatable start, physics dictates that his shorter legs can only devour so much track per step. His ceiling stops just short of Kishane’s because he has to take more steps to finish the race.

Noah Lyles (USA)

• Height: 5’11” (1.80 m) | Weight: ~155 lbs (70 kg)
• Personal Best: 9.79 seconds
• Biomechanical Profile: The ultimate top-end velocity monster. Because of his deep 200m background, Lyles has a delayed peak—he reaches his maximum speed later than Seville or Thompson but maintains it with virtually zero deceleration over the final 20 meters.
• Theoretical Peak Limit: 9.60 seconds

The Math: Lyles’ biggest limitation is his first 30 meters out of the blocks. If a simulation creates a “perfect world” where Lyles executes a flawless, explosive start that puts him even with the field at the transition phase, his unyielding speed endurance and mechanical efficiency at 5’11” would allow his top gear to drop him straight into the low 9.6s.

Letsile Tebogo (Botswana)

• Height: 6’0″ (1.84 m) | Weight: ~165 lbs (75 kg)
• Personal Best: 9.86 seconds (with immense untapped upside)
• Biomechanical Profile: He possesses a fluid, relaxed stride that heavily resembles Usain Bolt’s mechanics. At 6’0″, he has long levers but moves with an elasticity that reduces energy loss during ground contact.
• Theoretical Peak Limit: 9.58 seconds

The Math: Biomechanically, Tebogo has one of the highest theoretical ceilings in the sport. His upright posture and low-effort look mean he isn’t wasting energy on unnecessary muscle tension. If he paired his natural 200m fluid mechanics with a hyper-aggressive, wind-aided drive phase, his frame scales beautifully to challenge the absolute historic greats.

Ackeem Blake (Jamaica)

• Height: 5’11” (1.80 m) | Weight: ~172 lbs (78 kg)
• Personal Best: 9.88 seconds
• Biomechanical Profile: A pure, high-frequency power runner. Blake is incredibly explosive out of the blocks and possesses a bullet-like acceleration phase.
• Theoretical Peak Limit: 9.62 seconds

The Math: Blake is exceptional at generating early force, but his mechanical breakdown usually occurs in the final 15 meters where his high-frequency style causes him to tighten up and lose stride length. In a perfect race with a maximum tailwind pushing him through that late deceleration phase, he can maximize his 5’11” frame to crack the low 9.6s.

These Figures are Not Gospel

While these numbers are calculated using precise Newtonian physics, aerodynamic drag coefficients, and metabolic scaling laws, they belong firmly in the realm of idealized modeling. In the real world, human beings are not machines, and biology refuses to be perfectly neat.

Note: Both Oblique and Shericka could dominate the sprints, once they show up mentally. The bio-mechanical differences are not significant for the theoretical fastest to completely dominate the field. There are other athletes, doing well this year, that could make way for a new analysis. They are the Clayton Twin (Tia and Tina), Adaejah Hodge, Shenese Walker, Alana Reid, Shanoya Douglas and Jonielle Smith on the female side. On the men side: Kayinsola Ajayi, Collen Busang Kebinatshipi and Kenny Bednarek.

These figures should be treated as informed estimates rather than absolute gospel for several critical reasons:

1. The “Perfect Start” Paradox

To hit a time like 9.56 seconds for Kishane Thompson, the model assumes a block reaction time of roughly 0.115 to 0.120 seconds (near the legal human limit of 0.100s). In reality, a starter’s gun cadence varies by fractions of a second every single race. If an athlete anticipates the gun even slightly too much, they false start and are disqualified. If they hesitate to ensure safety, they lose 0.03 seconds before their foot even moves—instantly destroying the theoretical projection.

2. We Cannot Model Psychological Stress

A biomechanical formula assumes a central nervous system operating in a vacuum. It cannot account for:

• The blinding pressure of a sprint final.
• The presence of a rival closing in from the adjacent lane.
• The split-second decision to “tighten up” or “panic,” which causes a runner to clench their jaw and shoulders.

In sprinting, micro-tension kills speed. The moment a runner forces the stride instead of letting it flow, their ground contact time ticks up by a thousandth of a second per step. Over 40+ steps, that psychological glitch transforms a theoretical 9.58 into a real-world 9.81.

3. The Unpredictability of “Wind Assistance”

The math used here maximizes the legal limit of a +2.0 m/s tailwind. However, wind is rarely a uniform wall of air pushing perfectly straight down the track.

• It gusts and drops mid-race.
• It can swirl into a slight crosswind, forcing a runner’s core to expend energy on lateral stability rather than forward propulsion.
• The wind gauge only measures one point on the straightaway, meaning a runner might get a +2.0 push for the first 30 meters, but face dead air by the finish line.

4. The Chaos of Human Tissue

A physics model assumes that if you apply 4.5×body weight of force in 0.08 seconds, the body will perfectly rebound like a pristine steel spring. But human tendons, ligaments, and fascia are unpredictable organic materials. On any given day, micro-tears from training, minor hydration imbalances, or a track surface that is slightly too hard or too soft will alter energy return. If the track absorbs just 1% more energy than expected, the theoretical ceiling vanishes.

The Usain Bolt Lesson: In 2008, sports scientists used data to claim the absolute human limit was around 9.60 seconds. Then Usain Bolt—a 6’5″ outlier who defied traditional scaling laws—shattered that by running a 9.58 while actively celebrating and slowing down before the finish line.

A Word on Mutations

When we talk about athletes who “break the model,” we are almost always talking about individuals who have inherited highly specific genetic mutations that fundamentally alter how their bodies build muscle, process energy, or structure bone.

If a specific combination of rare genetic mutations comes together in one individual, the mathematical ceiling for human speed drops instantly.

The “Sprint Gene” Multiplier (ACTN3)

Almost every elite short-sprinter carries at least one copy of the 577R allele of the ACTN3 gene, which codes for alpha-actinin-3—a protein found exclusively in fast-twitch muscle fibers that allows them to withstand the massive force of explosive contractions.

• How a mutation changes the math: Most elites have two copies (the RR genotype). But if a mutation occurred that hyper-regulated this gene, creating an unprecedented density of these anchoring proteins, a sprinter’s muscles could handle 5 or 6 times their body weight in force without tearing. This would allow for a ground contact time below the current “hard limit” of 0.08 seconds.

Myostatin Deletion (The Genetic Brake Failure)

Myostatin is a protein that acts as a natural limit on muscle growth; it tells your body when it has enough muscle. Rare mutations can partially or completely disable the MSTN gene, resulting in “myostatin hypertrophy.”

• How a mutation changes the math: A sprinter with a partial myostatin deletion would naturally develop massive cross-sectional muscle density and explosive power without the corresponding fat mass. It would allow a taller sprinter (say, 6’4″) to possess the raw, brute leg power of a weightlifter while maintaining a light frame, completely bypassing the current power-to-weight scaling laws that slow tall runners down out of the blocks.

Hyper-Efficiency in the Phosphagen System (CKM)

The 100m is a race against time before your muscles run out of immediate fuel (ATP and Phosphocreatine). The CKM gene encodes muscle creatine kinase, an enzyme crucial for rapidly replenishing energy during those first 5 to 6 seconds.

• How a mutation changes the math: If a mutation optimized this enzyme to work 15% faster, a sprinter would experience zero deceleration in the final 20 meters of the race. Instead of slowing down from a peak velocity of 27 mph (44 km/h), they could theoretically accelerate right through the tape.

Structural Variations: Tendon Elasticity and Muscle Insertion

Sometimes the mutation isn’t chemical; it’s mechanical. Small genetic variations dictate exactly where a tendon attaches to a bone.

• How a mutation changes the math: If a mutation causes the Achilles tendon to insert even a few millimeters further forward on the heel bone, it changes the mechanical leverage (the torque) of the calf muscle. This acts like a higher gear ratio in a sports car—allowing the foot to snap off the ground with massive force using significantly less energy.

When biomechanists calculate limits like 9.44 seconds, they are averaging out known human physiology. But evolution thrives on outliers.

Just as a mutation in the EPOR gene gave the legendary cross-country skier Eero Mäntyranta 50% more red blood cells than an average man—completely breaking endurance models—the right combination of fast-twitch, structural, and metabolic mutations could easily produce an individual who makes our current “absolute limits” look conservative.

Science tracks what is statistically probable based on past data, but sports history is written by the genetic anomalies who break the models. Treat these numbers as the ultimate boundary of what current physics can map—but leave room for human genius or mutations to rewrite the math.