Every ultra.
One index.
Every ultra marathon on earth. From Barkley to Comrades, backyards to the Sahara. Distances, challenge ratings, course profiles, and everything you need to find your next ultra.
Ultra Races
Countries
Continents
Race Formats
Your First Ultra
WELCOMING COURSES, GENEROUS CUTOFFS, GREAT COMMUNITIES
8 AUG 2026
Amsterdam 100
Amsterdam, Netherlands
13 JUN 2026
Big Five Marathon
Entabeni, South Africa
11 APR 2026
Brazos Bend 50
Needville, United States
10 OCT 2026
Centurion Autumn 100
Goring-on-Thames, United Kingdom
4 MAY 2026
Comrades Marathon Qualifier 50K
Pietermaritzburg, South Africa
19 APR 2026
Connemara Ultra
Clifden, Ireland
20 SEP 2026
Copenhagen 100
Copenhagen, Denmark
17 JAN 2027
Country to Capital Ultra
Wendover, United Kingdom
Most Scenic
SCENERY
27 JUN 2026
90km du Mont-Blanc
Chamonix, France
12 APR 2026
Adidas Infinite Trails
Bad Gastein, Austria
25 JUL 2026
Andes Race
Huaraz, Peru
13 JUN 2026
Andorra Ultra Trail
Ordino, Andorra
25 SEP 2026
Bear 100
Logan, United States
15 NOV 2026
Beast Runners Taiwan 100K
Nantou, Taiwan
11 APR 2026
Buffalo Stampede
Bright, Australia
24 MAY 2026
Cape Wrath Ultra
Fort William, United Kingdom
Best Organized
ORGANIZATION
2 AUG 2026
CCC - Courmayeur-Champex-Chamonix
Courmayeur, Italy
14 JUN 2026
Comrades Marathon
Durban, South Africa
14 JUN 2026
Comrades Marathon
Durban, South Africa
5 SEP 2026
Jungfrau Marathon Ultra
Interlaken, Switzerland
28 JUN 2026
Lake Saroma 100km Ultramarathon
Saroma, Japan
24 JUN 2026
Lavaredo Ultra Trail
Cortina d'Ampezzo, Italy
14 NOV 2026
Oxfam Trailwalker Hong Kong
Hong Kong, Hong Kong
8 AUG 2026
Sierre-Zinal
Sierre, Switzerland
Strongest Community
COMMUNITY
18 MAY 2026
6 Jours de France
Privas, France
8 AUG 2026
Amsterdam 100
Amsterdam, Netherlands
8 MAY 2026
Bandera 50K
Bandera, United States
13 JUN 2026
Big Five Marathon
Entabeni, South Africa
11 APR 2026
Brazos Bend 50
Needville, United States
10 OCT 2026
Centurion Autumn 100
Goring-on-Thames, United Kingdom
14 JUN 2026
Comrades Marathon
Durban, South Africa
4 MAY 2026
Comrades Marathon Qualifier 50K
Pietermaritzburg, South Africa
Legendary
THE ICONIC RACES THAT DEFINE ULTRA RUNNING
1 JUN 2026
Antarctic Ice Marathon
Union Glacier, Antarctica
1 MAY 2026
Badwater 135
Death Valley, United States
MAR
Barkley Marathons
Frozen Head State Park, United States
15 AUG 2026
Big Dog's Backyard Ultra
Bell Buckle, United States
15 AUG 2026
Big's Backyard Ultra
Bell Buckle, United States
JUN
Bob Graham Round
Keswick, United Kingdom
14 JUN 2026
Comrades Marathon
Durban, South Africa
14 JUN 2026
Comrades Marathon
Durban, South Africa
Most Popular
THE MOST POPULAR ULTRAS WORLDWIDE
14 JUN 2026
Comrades Marathon
Durban, South Africa
14 JUN 2026
Comrades Marathon
Durban, South Africa
14 NOV 2026
Oxfam Trailwalker Hong Kong
Hong Kong, Hong Kong
8 AUG 2026
Sierre-Zinal
Sierre, Switzerland
5 SEP 2026
Jungfrau Marathon Ultra
Interlaken, Switzerland
28 JUN 2026
Lake Saroma 100km Ultramarathon
Saroma, Japan
2 AUG 2026
CCC - Courmayeur-Champex-Chamonix
Courmayeur, Italy
25 JUN 2026
Marathon du Mont-Blanc
Chamonix, France
Mountain Adventures
THE MOST SPECTACULAR VERTICAL GAIN ON THE PLANET
2 MAY 2026
Great Divide Trail FKT
Waterton Lakes, Canada
24 AUG 2026
PTL - Petite Trotte à Léon
Chamonix, France
30 AUG 2026
Swiss Peaks Trail
Oberwald, Switzerland
20 SEP 2026
Tor des Géants
Courmayeur, Italy
12 SEP 2026
Dragon's Back Race
Conwy, United Kingdom
28 AUG 2026
Transalpine Run
Garmisch-Partenkirchen, Germany
6 FEB 2027
Hong Kong Four Trails Ultra Challenge
Hong Kong, Hong Kong
12 APR 2026
Ronda dels Cims
Andorra la Vella, Andorra
100 Milers
THE CLASSIC DISTANCE — A JOURNEY WITHIN A JOURNEY
3 OCT 2026
Angeles Crest 100
Wrightwood, United States
MAR
Barkley Marathons
Frozen Head State Park, United States
25 SEP 2026
Bear 100
Logan, United States
10 OCT 2026
Centurion Autumn 100
Goring-on-Thames, United Kingdom
14 AUG 2026
Fat Dog 120
Manning Park, Canada
31 MAY 2026
Grindstone 100
Swoope, United States
16 MAY 2026
Hardrock Hundred
Silverton, United States
17 JAN 2027
HURT 100
Honolulu, United States
Desert Ultras
SAND, SUN, AND ENDLESS HORIZONS
3 OCT 2026
Angeles Crest 100
Wrightwood, United States
13 MAY 2026
Atacama Crossing (4 Deserts)
San Pedro de Atacama, Chile
1 MAY 2026
Badwater 135
Death Valley, United States
8 AUG 2026
Big Red Run
Birdsville, Australia
4 MAY 2026
Cocodona 250
Black Canyon City, United States
27 JUN 2026
Gobi Desert 100
Dunhuang, China
27 JUN 2026
Gobi March
Hami, China
27 JUN 2026
Gobi March (4 Deserts)
Jiayuguan, China
Backyard Ultras
LAST PERSON STANDING — ONE LOOP AT A TIME
25 APR 2026
Backyard Ultra Belgium
Retie, Belgium
15 AUG 2026
Big's Backyard Ultra
Bell Buckle, United States
16 MAY 2026
Centurion Backyard Ultra
Goring, United Kingdom
17 APR 2026
Sweden Backyard Ultra
Borås, Sweden
Toughest to Finish
THE HIGHEST DROP RATES ON EARTH
MAR
Barkley Marathons
Frozen Head State Park, United States
1 FEB 2027
Montane Yukon Arctic Ultra
Whitehorse, Canada
11 JAN 2027
The Spine Race
Edale, United Kingdom
4 MAY 2026
Cocodona 250
Black Canyon City, United States
27 SEP 2026
Spartathlon
Athens, Greece
12 JUN 2026
Tahoe 200
Homewood, United States
17 JAN 2027
HURT 100
Honolulu, United States
24 AUG 2026
PTL - Petite Trotte à Léon
Chamonix, France
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