In June 2004, a runner named Huw Lobb made history by outpacing 40 horses across a grueling 35-kilometer mountain course in Llanwrtyd Wells, Wales. The annual event originated in 1980 after a local pub owner, Gordon Green, overheard an argument between two patrons about whether a man could equal a horse over a long, uneven distance. The Man versus Horse Marathon has been run every June since, with runners and horse-and-rider pairs sharing the same path of road, forest trails, and mountain slopes.1

For the first 24 years, no runner managed to beat the fastest horse. While a cyclist accomplished the feat in 1989, bicycles were banned from the race in 1993. In the 25th running of the event, Lobb finished in 2 hours, 5 minutes, and 19 seconds, beating the top horse by 2 minutes and 17 seconds and claiming a prize purse that had accumulated over 25 years to reach 25,000 pounds.1

Why do humans struggle to compete with animals over short distances?

Over short sprints, humans are physically outclassed by most mammals of similar size. Usain Bolt’s 2009 world record 100-meter dash—completed in 9.58 seconds—equates to an average speed of 37.6 kilometers per hour.2 Research by Dennis Bramble of the University of Utah and Daniel Lieberman of Harvard, published in Nature in 2004, indicates that even elite human runners can only maintain peak speed for under 15 seconds. In contrast, horses, greyhounds, and North American pronghorn antelope can sustain speeds of 54 to 72 kilometers per hour for several minutes.3

The cheetah serves as the most extreme example of this disparity. GPS tracking of five wild cheetahs in Botswana revealed they reached top speeds of 93 kilometers per hour, though their hunting runs averaged only 173 meters.4 Scientists previously believed cheetahs abandoned hunts early due to overheating, based on a 1973 study of captive cheetahs on treadmills. However, a 2013 study by Robyn Hetem at the University of the Witwatersrand, which tracked wild cheetahs in Namibia, found the animals ended hunts at their normal body temperature of approximately 38.4 °C. The researchers concluded that temperature spikes after a hunt were caused by stress rather than the physical exertion of the run itself.5

How does human performance compare to horses over long distances?

Elite racehorses can maintain a gallop of 32 kilometers per hour for 10 kilometers, but their performance drops significantly in races lasting longer than 15 minutes. Historically, dispatch horses were ridden at an average speed of 21 kilometers per hour over a full day.3 By comparison, in April 2026, Kenyan runner Sabastian Sawe completed a marathon in 1 hour, 59 minutes, and 30 seconds, an average of 21.2 kilometers per hour.6 While the horse sustains that speed for a day and the human for 42 kilometers, the performance gap between them is often less than half a kilometer per hour. Humans also possess a unique mechanical advantage: unlike horses, which have narrow, rigid speed ranges and specific transition points between gaits, humans utilize a single running gait that maintains energy efficiency across a wide range of speeds.3

Why are humans biologically suited for endurance running?

The human advantage in long-distance running is largely physiological, specifically regarding thermoregulation. A 2018 study led by Yana Kamberov of the University of Pennsylvania found that humans possess ten times the density of sweat glands compared to chimpanzees and macaques.7 This allows humans to evaporate sweat from the skin to cool down without relying on panting. For quadrupeds, running is biomechanically linked to breathing; research by Bramble and David Carrier in 1983 demonstrated that dogs, horses, and rabbits take one full breath for every stride.8 Because many mammals use panting as their primary method of heat dissipation, their ability to breathe is limited during high-exertion running.9 While horses do sweat, the Welsh race results suggest human victories often correlate with warmer weather, which may disadvantage the larger, heat-producing mass of a horse. However, the variables—such as race length and weather—make direct year-to-year comparisons difficult.1

How do persistence hunters utilize endurance to catch prey?

Persistence hunting relies on the human capacity to track animals through extreme heat. Researcher Louis Liebenberg, who studied hunters in the Central Kalahari between 1985 and 2001, observed that hunts often begin in the hottest part of the day, with temperatures reaching 39–42 °C. Hunters track prey like the kudu, forcing the animal to flee repeatedly. Because the prey cannot rest in the shade, it eventually collapses from exhaustion. In October 2001, a hunter named Karoha tracked a kudu for 3 hours and 50 minutes, covering 25.1 kilometers at an average speed of 6.3 kilometers per hour.9 These hunters select their prey based on ground conditions: in the rainy season, they target smaller antelopes when wet sand hardens the terrain, while in the dry season, they target larger animals that fatigue quickly in loose sand.9

Notes and Sources

  1. Green Events. Man v Horse, race history and winners. green-events.co.uk; Reuters. Briton Lightfoot becomes first man in 15 years to win Man v Horse race, June 13, 2022. reuters.com.
  2. World Athletics. Men's 100m world record, Usain Bolt, 9.58, Berlin, August 16, 2009.
  3. Bramble DM, Lieberman DE. Endurance running and the evolution of Homo. Nature 432, 2004: 345-352.
  4. Wilson AM, Lowe JC, Roskilly K, Hudson PE, Golabek KA, McNutt JW. Locomotion dynamics of hunting in wild cheetahs. Nature 498, 2013: 185-189.
  5. Hetem RS et al. Cheetah do not abandon hunts because they overheat. Biology Letters 9(5), 2013: 20130472.
  6. World Athletics. Ratified: world records for Sawe, Ehammer, Charlton and more. Press release, July 23, 2026.
  7. Kamberov YG et al. Comparative evidence for the independent evolution of hair and sweat gland traits in primates. Journal of Human Evolution 125, 2018: 99-105.
  8. Bramble DM, Carrier DR. Running and breathing in mammals. Science 219(4582), 1983: 251-256.
  9. Liebenberg L. Persistence hunting by modern hunter-gatherers. Current Anthropology 47(6), 2006.
  10. Morin E, Winterhalder B. Ethnography and ethnohistory support the efficiency of hunting through endurance running in humans. Nature Human Behaviour 8(6), 2024.
  11. Pickering TR, Bunn HT. The endurance running hypothesis and hunting and scavenging in savanna-woodlands. Journal of Human Evolution 53, 2007.
  12. Lieberman DE, Bramble DM, Raichlen DA, Shea JJ. The evolution of endurance running and the tyranny of ethnography: a reply to Pickering and Bunn (2007). Journal of Human Evolution 53, 2007.