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Ultra-running data shows female endurance gap narrows over extreme distances

Amateur race studies show women closing the performance margin in ultra-endurance events, BBC News reports.

The short version

  • While male runners lead by 10% to 12% in distances up to marathons, amateur data shows the pace gap shrinks to 0.25% at 100 miles.[BBC News]
  • Researchers point to possible physiological traits like fatigue resistance and fat metabolism, alongside milestones such as Jasmin Paris finishing the Barkley Marathons in 2024.[BBC News]
  • Experts warn that firm scientific conclusions remain difficult because women comprise only about 20% of ultramarathon starters.[BBC News]

Key facts

  • The performance gap between male and female runners averages 10% to 12% in races up to marathon distance.[BBC News]
  • An analysis of amateur ultra-running data shows the pace gap declines to 0.25% in 100-mile races.[BBC News]
  • Jasmin Paris made history in 2024 by becoming the first woman to complete the Barkley Marathons.[BBC News]
  • Women account for roughly 20% of competitors at ultramarathon start lines.[BBC News]

What remains uncertain

  • Whether physiological factors like muscle composition or fat metabolism give women a definitive advantage remains unconfirmed, with sports scientists noting research in extreme endurance lags behind shorter distances.[BBC News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.