214 miles circumnavigating a 760,000-year-old volcanic caldera in the Eastern Sierra
Other trail races within 142 miles
The Mammoth 200 is a 214-mile single loop through the Eastern Sierra Nevada, starting and finishing at Mammoth Mountain in Mammoth Lakes, California. The course circumnavigates a 760,000-year-old volcanic caldera, threading together small mountain communities across a diverse landscape: pristine alpine lakes, abandoned mining corridors, golden fall foliage, the world's largest Jeffrey pine forest, high desert sage flats, volcanic rock formations, and the ethereal tufa towers of Mono Lake. The race is bookended by summit runs atop 11,053-foot Mammoth Mountain, offering sweeping 360-degree views at both the start and finish. Runners navigate over 30,000 feet of climbing with an average elevation of 8,130 feet, facing the full character of October in the Sierra — including the potential for early-season snow and rapidly shifting weather.
Recommended for seasoned ultrarunners
Mammoth Lakes, CA, United StatesOctober 02, 2026
The Mammoth 200 is a loop trail race in Mammoth Lakes, CA, United States, held on October 02, 2026. The course covers 210.6 miles, climbs 30,660 ft, and has a 108h cutoff.
Challenging terrain with rocks, roots, and steep grades
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Village Start Start | 0.0 | 8,058 ft | — | Drop Bags | ||
Summit 1 Aid Station | 9.7 | 11,024 ft | 2:00 PM | Drop Bags | ||
Duck Pass Aid Station | 18.8 | 9,081 ft | 6:30 PM | Drop Bags | ||
Mammoth Rock Trail Fan Zone Landmark | 25.4 | 7,858 ft | — | |||
Sherwin Creek Aid Station | 32.5 | 7,461 ft | 11:30 PM | Crew | Drop Bags | |
Convict Lake Aid Station | 44.3 | 7,552 ft | 2:30 AM +1 | Crew | Drop Bags | |
Crowley Lake Aid Station | 54.4 | 6,923 ft | 8:30 AM +1 | Crew | Pacers | Drop Bags |
Tom's Place (Water Only) Aid Station | 60.2 | 7,070 ft | — | Drop Bags | ||
Green Church Aid Station | 70.1 | 7,533 ft | 3:00 PM +1 | Crew | Drop Bags | |
Sawmill Meadow Aid Station | 84.6 | 9,163 ft | 10:30 PM +1 | Drop Bags | ||
Taylor Canyon Aid Station | 98.5 | 8,084 ft | 5:30 AM +2 | Crew | Pacers | Drop Bags |
Crooked Meadows Aid Station | 108.6 | 8,816 ft | 11:30 AM +2 | Crew | Pacers | Drop Bags |
Indiana Summit Aid Station | 117.2 | 8,156 ft | — | Drop Bags | ||
Crater Mountain Aid Station | 125.7 | 7,211 ft | 8:30 PM +2 | CrewHike in | Pacers | Drop Bags |
Lee Vining Aid Station | 141.0 | 6,752 ft | 4:00 AM +3 | Crew | Pacers | Drop Bags |
The Gate (Water Only) Aid Station | 152.7 | 7,297 ft | — | Drop Bags | ||
Grant Lake Aid Station | 160.3 | 7,133 ft | 1:00 PM +3 | Crew | Pacers | Drop Bags |
June Mountain Aid Station | 172.4 | 7,559 ft | 8:00 PM +3 | Crew | Pacers | Drop Bags |
Obsidian Dome Aid Station | 183.6 | 8,337 ft | 3:00 AM +4 | Crew | Pacers | Drop Bags |
Inyo Crater Aid Station | 196.3 | 8,117 ft | 9:30 AM +4 | Crew | Pacers | Drop Bags |
Minaret Vista Aid Station | 202.4 | 9,229 ft | 1:30 PM +4 | CrewHike in | Drop Bags | |
Summit 2 Aid Station | 208.5 | 11,024 ft | 6:00 PM +4 | Drop Bags | ||
Finish Finish | 215.1 | 8,058 ft | 9:00 PM +4 | Crew |
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Average course elevation 8,130 ft with long sections above 9,000 ft; summit reaches 11,053 ft
October in the Eastern Sierra can bring rapid weather changes; the 2025 inaugural race saw multiple storms and over a foot of snow
Nighttime temperatures at altitude can drop well below freezing in October; snowfall is possible on exposed ridges and summits
No required gear specified
No recommended gear specified
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