Study the terrain before race day. Elevation profiles, aid station details, segment breakdowns, and cutoff times for 20 iconic ultra marathons.
Olympic Valley to Auburn, CA · 100.2 mi · 18,090 ft gain · High point 8,750 ft
The oldest 100-mile trail race in the world. From Squaw Valley ski resort to Auburn, traversing the Sierra Nevada mountains on the Western States Trail. Known for brutal heat in the canyons and technical river crossings.
Chamonix, France · 106 mi · 32,800 ft gain · High point 8,530 ft
The world's most prestigious ultra — a loop around Mont Blanc through France, Italy, and Switzerland. Massive vertical gain with sustained alpine terrain and unpredictable mountain weather.
Leadville, CO · 100 mi · 15,600 ft gain · High point 12,620 ft
The Race Across the Sky — an out-and-back course at extreme altitude in the Colorado Rockies. Never drops below 9,200 ft. Hope Pass at 12,620 ft is tackled twice.
Silverton, CO · 100.5 mi · 33,992 ft gain · High point 14,048 ft
The hardest 100-miler in North America. A loop through the San Juan Mountains with 13 passes above 12,000 ft. 33,992 ft of climbing.
Kaysville to Midway, UT · 100 mi · 24,600 ft gain · High point 10,450 ft
One of the original 100-milers. Point-to-point through the Wasatch Mountains with 24,600 ft of climbing.
Fountain Hills, AZ · 100 mi · 5,800 ft gain · High point 2,900 ft
A fast and friendly 100-miler through the Sonoran Desert on looped Pemberton Trail. Perfect for first-time 100-mile runners.
Gooseberry Falls to Lutsen, MN · 103.4 mi · 20,000 ft gain · High point 1,829 ft
Traverses the rugged Superior Hiking Trail along Lake Superior's North Shore. Rocky, rooty, technical singletrack.
Dayton, WY · 100 mi · 18,600 ft gain · High point 9,400 ft
Through the Bighorn Mountains of Wyoming. Wild, remote, and stunningly beautiful with possible snow at elevation and river crossings.
Logan, UT to Fish Haven, ID · 100 mi · 22,300 ft gain · High point 9,600 ft
Crossing the Bear River Range from Utah into Idaho through peak fall colors. 22,300 ft of climbing.
Herriman, UT · 50 mi · 8,500 ft gain · High point 7,400 ft
A challenging 50-miler through the Oquirrh Mountains west of Salt Lake City. Technical singletrack with 8,500 ft of climbing.
Antelope Island, UT · 50 mi · 6,200 ft gain · High point 6,600 ft
An early season 50-miler on Antelope Island in the Great Salt Lake. Run with bison and pronghorn.
Lake Tahoe, CA/NV · 205 mi · 40,000 ft gain · High point 9,700 ft
A 205-mile circumnavigation of Lake Tahoe through the Sierra Nevada. 40,000+ ft of climbing. The ultimate test of endurance.
Moab, UT · 238 mi · 29,467 ft gain · High point 11,000 ft
238 miles through five desert mountain ranges in southeastern Utah. Canyonlands, La Sal Mountains, and red rock terrain.
Virgin, UT · 100 mi · 19,100 ft gain · High point 8,000 ft
100 miles through the stunning red rock canyons near Zion National Park. Technical desert singletrack with massive views.
Honolulu, HI · 100 mi · 24,500 ft gain · High point 2,800 ft
Hawaii's notorious 100-miler through the Ko'olau Range on Oahu. Extreme mud, roots, and humidity on 5 loops of 20 miles.
Steamboat Springs, CO · 100 mi · 20,000 ft gain · High point 10,400 ft
A stunning 100-miler through the Yampa Valley and Park Range near Steamboat Springs. 20,000+ ft of climbing with alpine meadows.
Black Canyon City, AZ · 62 mi · 8,200 ft gain · High point 6,400 ft
A fast and runnable 100K on the Arizona Trail through Black Canyon. Point-to-point with desert terrain and mild winter temperatures.
Foresthill, CA · 100 mi · 22,000 ft gain · High point 7,200 ft
Shares trails with Western States and serves as a top WSER qualifier. 100 miles through the American River Canyon.
Black Canyon City to Flagstaff, AZ · 250 mi · 40,000 ft gain · High point 9,000 ft
250 miles across Arizona from desert to ponderosa pine. Traverses diverse ecosystems from 2,000 to 9,000+ ft.
Kaysville to North Salt Lake, UT · 50 mi · 11,000 ft gain · High point 9,000 ft
A demanding 50-miler along the Wasatch Front with 11,000 ft of climbing and stunning views of the Salt Lake Valley.