Ultramarathons in United States

1944 races tracked — the season peaks in October (268 races), with May close behind (229).

By distance 1462 50K · 315 50 mi · 103 100K · 52 100 mi
Biggest field JFK 50 Mile — 1,119 finishers in 2024
Steepest course Quad Rock 50 Mile — 137.5 m/km
Deepest results history Western States 100 — 10 recorded editions

Next starts in United States

All 1192 upcoming →
Timed12 hours
GRIT —

Dia De Los Muertos Endurance 12 Hour Run

South Beach, OR, USA

Oct 23
Timed6 hours
GRIT —

Dia De Los Muertos Endurance 6 Hour Run

South Beach, OR, USA

Oct 23
Timed12 hours
GRIT —

Weekend at Burney 12h

Burney, CA, USA

Oct 23
Fixed Distance50K
GRIT 2.5

Call of the Wilds Mountain Fest 50km Race

Waterville, PA, USA

50 km Oct 24
Fixed Distance50 mi
GRIT 4

Canyonlands 50 Mile Race

Moab, UT, USA

80 km Oct 24
Fixed Distance50K
GRIT 2.5

Canyonlands 50 km Race

Moab, UT, USA

50 km Oct 24
Timed12 hours
GRIT —

Carkeek 12 Hour

Seattle, WA, USA

131 m D+ Oct 24
Timed6 hours
GRIT —

Carkeek 6 Hour

Seattle, WA, USA

131 m D+ Oct 24
Fixed Distance50K
GRIT 2.8

Coyote Wall 50km Trail Race

White Salmon, WA, USA

55 km Oct 24
Fixed Distance50K
GRIT 2.5

Day of the Dead Running Series

Las Cruces, NM, USA

50 km Oct 24
Timed12 hours
GRIT —

Endless Mile - 12 Hour Race

Alabaster, AL, USA

5 m D+ Oct 24
Timed6 hours
GRIT —

Endless Mile - 6 Hour Race

Alabaster, AL, USA

5 m D+ Oct 24