Skip to main content
Athlete profile · Sources reviewed Oct 20, 2026

Stephanie Rosebaugh

67-yard backyard runner and repeat Cocodona 250 finisher

Stephanie Rosebaugh has completed 67 backyard yards and twice finished Cocodona 250, alongside leading results at 100 and 200 miles.

United StatesPrescott, ArizonaW40–44
World Team Championship · 51 yards
67Backyard bestSummit assist · 202584:30:55Cocodona 250 best6th woman · 202461:05:26Bigfoot 2003rd woman · 2024
Backyard Ultra World Team Championship 2026 · Stopped

51 yards completed before stopping

Completed 51 yards, then finished yard 52 over the hour. The United States’s national race is over: the team finished on 1120 yards, 1st in the standings at this point.

Final results after yard 124 (16:07 UTC, 22 October), matching the organizer's official leaderboard. Organizer results ↗ Championship guide →

01 · Athlete overview

The record so far

Stephanie Rosebaugh is an American backyard and trail ultrarunner from Prescott, Arizona. Her published results range from 12-hour races and 100-mile wins to repeat finishes at 200- and 250-mile events.

At the 2025 Summit Backyard Ultra, Rosebaugh completed 67 yards for 449.302 kilometers, placing second overall and first among women. The performance ranked fifth on DUV’s women’s world list for the year.

Rosebaugh followed that result by winning the women’s race at Across the Years’ Last Person Standing elimination event on December 31, 2025, with 276.984 kilometers and third place overall, then took women’s victories at the 2026 Queeny Backyard Ultra, completing 42 yards, and the 2026 Ode to Laz Backyard Ultra, completing 53. She was selected for the United States team for the 2026 Backyard Ultra World Team Championship, which started on October 17, 2026. She has also finished Cocodona 250 twice, placed third among women at the 2024 Bigfoot 200, and won the 2024 Saddles 100.

02 · Career highlights

Defining performances

2026

Ode to Laz Backyard Ultra women’s winner

Completed 53 yards for 355.418 kilometers, placing fourth overall and first among women.

↗
2026

Queeny Backyard Ultra women’s winner

Completed 42 yards for 281.652 kilometers, placing fourth overall and first among women.

↗
2025

67-yard Summit Backyard assist

Completed 449.302 kilometers to place second overall and first among women, one yard behind winner Mark Dowdle.

↗
2024

Saddles 100 champion

Won the women’s race in 25:30:25 and placed ninth overall.

↗
2024

Bigfoot 200 women’s podium

Finished third among women and thirteenth overall in 61:05:26.

↗
03 · Selected results

Performance history

Selected results, not a complete race history. Rankings and record descriptions reflect the cited sources at their review dates. Distances may use different rounding conventions.

Selected ultramarathon results for Stephanie Rosebaugh
DateEventPerformanceResultSource
Javelina Jangover Night Run 50K50 km trail4:30:021st woman · 3rd overallView ↗
Ode to Laz Backyard UltraBackyard ultra53 yards · 355.418 km1st woman · 4th overallView ↗
Cocodona 250250-mile trail109:06:5633rd woman · 137th overallView ↗
Queeny Backyard UltraBackyard ultra42 yards · 281.652 km1st woman · 4th overallView ↗
Across the Years Last Person StandingElimination race276.984 km1st woman · 3rd overallView ↗
Summit Backyard UltraBackyard ultra67 yards · 449.302 kmAssist · 1st woman · 2nd overallView ↗
Babbitt’s Backyard UltraBackyard ultra38 yards · 254.828 km1st woman · 5th overallView ↗
Jackrabbit Jubilee12-hour road103.999 km1st woman · 3rd overallView ↗
Tahoe 200 Endurance Run200-mile trail70:11:044th woman · 13th overallView ↗
Across the Years Last Person StandingElimination race229.329 km1st woman · 3rd overallView ↗
Saddles 100100-mile trail25:30:251st woman · 9th overallView ↗
Bigfoot 200 Endurance Run200-mile trail61:05:263rd woman · 13th overallView ↗
Cocodona 250250-mile trail84:30:556th woman · 27th overallView ↗
04 · Keep exploring