Best Organized
PROFESSIONAL RACE ORGANIZATIONS WITH EXCELLENT AID STATIONS, LOGISTICS, AND RUNNER SUPPORT. THESE RACES SET THE STANDARD.
Races with an organization rating of 4 or 5 out of 5, based on runner feedback on aid station quality, course marking, communication, logistics, safety coverage, and overall race-day execution. Sorted by highest rating first.
89 Races · 33 Countries
2 AUG 2026
CCC - Courmayeur-Champex-Chamonix
Courmayeur, Italy
13 JUN 2027 (est.)
Comrades Marathon
Durban, South Africa
13 JUN 2027 (est.)
Comrades Marathon
Durban, South Africa
5 SEP 2026
Jungfrau Marathon Ultra
Interlaken, Switzerland
27 JUN 2027 (est.)
Lake Saroma 100km Ultramarathon
Saroma, Japan
23 JUN 2027 (est.)
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
25 JUL 2026
Swiss Alpine Marathon
Davos, Switzerland
29 APR 2027 (est.)
TDS
Courmayeur, Italy
10 APR 2027 (est.)
Transgrancanaria
Las Palmas, Spain
16 MAY 2027 (est.)
Ultra-Trail Australia
Katoomba, Australia
24 AUG 2026
Ultra-Trail du Mont-Blanc
Chamonix, France
23 APR 2027 (est.)
Ultra-Trail Mt. Fuji
Kawaguchiko, Japan
23 APR 2027 (est.)
Ultra-Trail Mt. Fuji
Kawaguchiko, Japan
27 JUN 2027 (est.)
Western States 100
Olympic Valley, United States
17 MAY 2027 (est.)
6 Jours de France
Privas, France
12 JUN 2027 (est.)
Andorra Ultra Trail
Ordino, Andorra
3 OCT 2026
Angeles Crest 100
Wrightwood, United States
7 JUN 2027 (est.)
Antarctic Ice Marathon
Union Glacier, Antarctica
4 AUG 2026
Australian 24 Hour Championships
Adelaide, Australia
7 MAY 2027 (est.)
Badwater 135
Death Valley, United States
14 MAY 2027 (est.)
Bandera 50K
Bandera, United States
MAR
Barkley Marathons
Frozen Head State Park, United States
25 SEP 2026
Bear 100
Logan, United States
12 JUN 2027 (est.)
Big Five Marathon
Entabeni, South Africa
8 AUG 2026
Big Red Run
Birdsville, Australia
JUN
Bob Graham Round
Keswick, United Kingdom
10 APR 2027 (est.)
Brazos Bend 50
Needville, United States
17 OCT 2026
Cappadocia Ultra-Trail
Ürgüp, Turkey
20 NOV 2026
Coast to Kosciuszko
Eden, Australia
3 MAY 2027 (est.)
Comrades Marathon Qualifier 50K
Pietermaritzburg, South Africa
30 MAY 2027 (est.)
Copper Canyon Ultra Marathon
Urique, Mexico
17 JAN 2027
Country to Capital Ultra
Wendover, United Kingdom
21 JUL 2027 (est.)
Eiger Ultra Trail
Grindelwald, Switzerland
11 APR 2027 (est.)
Eiger Ultra Trail E101
Grindelwald, Switzerland
12 AUG 2026
El Cruce Columbia
Villa La Angostura, Argentina
16 MAY 2027 (est.)
Gaoligong by UTMB
Tengchong, China
8 MAY 2027 (est.)
Great Wall Marathon Ultra
Huangyaguan, China
30 MAY 2027 (est.)
Grindstone 100
Swoope, United States
15 MAY 2027 (est.)
Hardrock Hundred
Silverton, United States
17 JAN 2027
Hong Kong 100 Ultra Trail Race
Hong Kong, Hong Kong
17 JAN 2027
HURT 100
Honolulu, United States
11 APR 2027 (est.)
Istria 100
Buzet, Croatia
1 NOV 2026
Javelina Jundred
Fountain Hills, United States
21 NOV 2026
JFK 50 Mile
Boonsboro, United States
20 MAR 2027
Jordan Ultra
Dana, Jordan
3 JUL 2027 (est.)
Kepler Challenge
Te Anau, New Zealand
11 APR 2027 (est.)
Kullamannen by UTMB
Mölle, Sweden
16 SEP 2026
La Ultra - The High
Leh, India
24 JUL 2026
Lakeland 100
Coniston, United Kingdom
18 JUL 2026
Laugavegur Ultra Marathon
Landmannalaugar, Iceland
15 AUG 2026
Leadville Trail 100
Leadville, United States
23 APR 2027 (est.)
Madeira Island Ultra Trail
Porto Moniz, Portugal
12 APR 2027 (est.)
Marathon des Sables
Ouarzazate, Morocco
24 JUN 2027 (est.)
Marathon du Mont-Blanc
Chamonix, France
15 APR 2027 (est.)
Massanutten Mountain Trails 100
Harrisonburg, United States
18 OCT 2026
Mount Kinabalu International Climbathon
Kundasang, Malaysia
27 NOV 2026
Oman by UTMB
Nizwa, Oman
26 NOV 2026
Oman by UTMB
Muscat, Oman
17 APR 2027 (est.)
Penyagolosa Trails MiM
Castellón de la Plana, Spain
7 NOV 2026
Pinhoti 100
Sylacauga, United States
17 AUG 2026
Ring O' Fire
Holyhead, United Kingdom
11 APR 2027 (est.)
Ronda dels Cims
Andorra la Vella, Andorra
11 APR 2027 (est.)
Salomon Ultra Pirineu
Bagà, Spain
22 NOV 2026
Sani Stagger
Underberg, South Africa
24 AUG 2026
Self-Transcendence 3100 Mile Race
New York, United States
10 JUL 2027 (est.)
Sinister 7 Ultra
Blairmore, Canada
27 SEP 2026
Spartathlon
Athens, Greece
11 SEP 2026
Superior 100
Gooseberry Falls, United States
14 FEB 2027
Tarawera Ultramarathon 100 Mile
Rotorua, New Zealand
14 FEB 2027
Tarawera Ultramarathon 50K
Rotorua, New Zealand
2 MAY 2027 (est.)
Thailand by UTMB
Chiang Mai, Thailand
7 FEB 2027
The Coastal Challenge
Quepos, Costa Rica
7 FEB 2027
The Coastal Challenge
Quepos, Costa Rica
20 SEP 2026
Tor des Géants
Courmayeur, Italy
28 AUG 2026
Transalpine Run
Garmisch-Partenkirchen, Germany
11 APR 2027 (est.)
Transgrancanaria HG 50K
Las Palmas, Spain
8 MAY 2027 (est.)
Transvulcania Ultramarathon
Los Llanos de Aridane, Spain
19 JUN 2027 (est.)
Tromsø Midnight Sun Marathon Ultra
Tromsø, Norway
25 APR 2027 (est.)
Ultra Balaton
Balatonfüred, Hungary
16 MAY 2027 (est.)
Ultra-Trail Australia 50K
Katoomba, Australia
22 NOV 2026
Ultra-Trail Cape Town
Cape Town, South Africa
4 APR 2027
Umstead 100
Raleigh, United States
4 JUL 2027 (est.)
Val d'Aran by UTMB
Vielha, Spain
30 JAN 2027
Waldo 50K
Oakridge, United States
6 SEP 2026
Wasatch Front 100
Kaysville, United States
7 MAR 2027
Way Too Cool 50K
Cool, United States
19 JUN 2027 (est.)
West Highland Way Race
Milngavie, United Kingdom