17 events
Trail running races in May 2025: ultramarathons in the United States
Big A 50K Trail Race
York, United States
03 May, 2025 (Sat)
Trail running
50 km
Falcon 50
Colorado Springs, United States
03 May, 2025 (Sat)
Trail running
80.5 km
Folsom Lake Trail Run
Folsom Point, United States
03 May, 2025 (Sat)
Trail running
50 km
McDonald Forest
Corvallis, United States
03 May, 2025 (Sat)
Trail running
50 km
Recommended for you
See moreMt. Si Trail Runs
Snoqualmie, United States
04 May, 2025 (Sun)
Trail running
50 km, 80.5 km, 95 km
Dirty German Endurance Fest
Philadelphia, United States
10 May, 2025 (Sat)
Trail running
50 km, 80.5 km
Don't Fence Me in Trail Run
Helena, United States
10 May, 2025 (Sat)
Trail running
50 km
This event also offers:Walking
Glacier Ridge Trail Ultramarathon & Trail Race
Portersville, United States
10 May, 2025 (Sat)
Trail running
50 km, 80.5 km
Quicksilver 100K and 50K
San Jose, United States
10 May, 2025 (Sat)
Trail running
50 km, 100 km
Rock-On, Lake Perry! Trail Run
Meriden, United States
10 May, 2025 (Sat)
Trail running
50 km
Bestsellers
4.4
EDP Lisbon Marathon
Lisboa, Portugal
25-26 Oct, 2025 (Sat - Sun)
Running
From 50 EUR
Up to 12% off
4.7
Generali Malaga Marathon
Málaga, Spain
13-14 Dec, 2025 (Sat - Sun)
Running
From 12 EUR
Up to 29% off
4.4
Angkor Wat International Half Marathon
Krong Siem Reap, Cambodia
07 Dec, 2025 (Sun)
Running
Up to 33% off
4.5
Map
Istanbul Marathon
Fatih, Turkey
02 Nov, 2025 (Sun)
Running
From 80 EUR120 EUR
4.9
Map
Glendalough Lap of the Gap Marathon
Glendalough, Ireland
24 May, 2025 (Sat)
Running
From 63 EUR
Up to 50% off
4.8
Garda Trentino Half Marathon
Riva del Garda, Italy
09 Nov, 2025 (Sun)
Running
From 12 EUR
Up to 11% off
4.6
Map
Stockholm Half Marathon
Södermalm, Sweden
30 Aug, 2025 (Sat)
Running
4.4
Leiden Marathon
Leiden, Netherlands
11 May, 2025 (Sun)
Running
From 16 EUR
4.8
Map
6 lakes – 6 sjöar
FJÄLLNORA 35, Sweden
16 Aug, 2025 (Sat)
Trail running, Running
4.2
Rural Kutxa San Sebastian Half Marathon
Donostia-San Sebastian, Spain
05 Oct, 2025 (Sun)
Running
From 37 EUR
Up to 25% off
4.7
Wizz Air Venice Marathon
Venice, Italy
26 Oct, 2025 (Sun)
Running
From 35 EUR44 EUR
5
Bangkok 21K Park Run
Bangkok, Thailand
04 May, 2025 (Sun)
Running
Up to 20% off
4
Angkor Empire Marathon
Angkor Wat, Cambodia
03 Aug, 2025 (Sun)
Running
3.8
Phnom Penh International Half Marathon
Phnom Penh, Cambodia
15 Jun, 2025 (Sun)
Running
4.7
Breast Cancer Run 5K Fun Run
Kinshasa, Democratic Republic of the Congo
05 Oct, 2025 (Sun)
Running
Up to 31% off
4.4
Swedbank Tallinn Marathon
Tallinn, Estonia
12-14 Sep, 2025 (Fri - Sun)
Running, Walking
From 30 EUR40 EUR
3.8
Congo River Marathon
Kinshasa, Democratic Republic of the Congo
01 Jun, 2025 (Sun)
Running
Up to 21% off
4.5
French Riviera Marathon Nice-Cannes
Nice, France
09 Nov, 2025 (Sun)
Running
From 71 EUR90 EUR
5
Run the Ridge
Knockfin, Ireland
16 Aug, 2025 (Sat)
Trail running
From 10 EUR
Up to 22% off
5
Alicante – Santa Pola, The Greatest Mediterranean Race 21k
Alicante, Spain
09 Nov, 2025 (Sun)
Running
From 25 EUR32 EUR
This week’s best deals
Up to 60% off
5
Ultra Maratona Atlântica
Melides, Portugal
27 Jul, 2025 (Sun)
Trail running
From 10 EUR25 EUR
Up to 50% off
Trakai Triathlon
Trakai, Lithuania
29 Jun, 2025 (Sun)
Triathlon
From 25 EUR50 EUR
Up to 50% off
1
Ostrava City Marathon
Ostrava, Czechia
14 Sep, 2025 (Sun)
Running
From 6 EUR10 EUR
Up to 50% off
5
Map
Pula Marathon
Pula, Croatia
20 Sep, 2025 (Sat)
Nordic walking, Running
From 10 EUR20 EUR
Up to 50% off
Pisa Half Marathon
Pisa, Italy
12 Oct, 2025 (Sun)
Running
From 10 EUR20 EUR
Up to 50% off
4.8
Garda Trentino Half Marathon
Riva del Garda, Italy
09 Nov, 2025 (Sun)
Running
From 12 EUR
Up to 50% off
4.5
Palermo Marathon and Half Marathon
Palermo, Italy
16 Nov, 2025 (Sun)
Running
From 20 EUR40 EUR
Up to 45% off
4.6
Murcia Marathon
Murcia, Spain
01 Feb, 2026 (Sun)
Running
From 14 EUR23 EUR
Up to 43% off
Västerås Swimrun
Jollekappseglarna Västerås, Sweden
16 Aug, 2025 (Sat)
Swimrun
Up to 43% off
Trento Half Marathon
Trento, Italy
05 Oct, 2025 (Sun)
Running
From 20 EUR35 EUR
Up to 43% off
5
Ecomaratona Chianti Classico
Castelnuovo Berardenga, Italy
19 Oct, 2025 (Sun)
Trail running
From 15 EUR20 EUR
Up to 43% off
Trail Valle de los Perdidos
Bariloche, Argentina
22 Nov, 2025 (Sat)
Trail running
Up to 42% off
4.3
Maratona di Reggio Emilia
Reggio Emilia, Italy
14 Dec, 2025 (Sun)
Running
From 30 EUR40 EUR
Up to 41% off
4.6
Tromsø Midnight Sun Marathon
Tromsø, Norway
21 Jun, 2025 (Sat)
Running
From 10 EUR17 EUR
Up to 40% off
Endurance Academy
Belgrade, Serbia
21 Nov, 2025 (Fri)
Running
From 195 EUR295 EUR
Up to 40% off
4.6
Hyundai Porto Half Marathon
Porto, Portugal
14 Sep, 2025 (Sun)
Running
From 12 EUR15 EUR
Up to 40% off
100 km delle Alpi - Torino
Turin, Italy
18 Oct, 2025 (Sat)
Running
From 30 EUR50 EUR
Up to 40% off
Parma Marathon
Parma, Italy
19 Oct, 2025 (Sun)
Running
From 15 EUR25 EUR
Up to 40% off
Mispo Winter marathon
Vändra, Estonia
06 Dec, 2025 (Sat)
Running
From 12 EUR20 EUR
Up to 39% off
Eastern Rhodopes Wild Race
Krumovgrad, Bulgaria
18 Oct, 2025 (Sat)
Trail running
From 20 EUR33 EUR
Registration just opened
The One on the River - Marlow - July
Buckinghamshire, United Kingdom
13 Jul, 2025 (Sun)
Swimming, Duathlon, Aquathlon, Aquabike, Triathlon
Up to 20% off
226ERS UCI Gravel World Series - Girona - Sea Otter Europe
Girona, Spain
20 Sep, 2025 (Sat)
Gravel biking
From 80 EUR100 EUR
Up to 29% off
Montepulciano Run
Montepulciano, Italy
05 Oct, 2025 (Sun)
Running
From 18 EUR25 EUR
Up to 14% off
Map
Trail Ribeira Sacra
Luintra, Spain
12 Oct, 2025 (Sun)
Trail running
From 60 EUR70 EUR
Up to 13% off
Triangle Adventure
EN3, Portugal, Portugal
24 Oct, 2025 (Fri)
Trail running
From 345 EUR395 EUR
Up to 16% off
Map
Jakarta Running Festival
Jakarta, Indonesia
25-26 Oct, 2025 (Sat - Sun)
Running
Up to 31% off
5
Ston Wall Marathon
Ston, Croatia
21 Sep, 2025 (Sun)
Running
From 30 EUR40 EUR
Up to 32% off
3.9
Standard Chartered Hanoi Marathon - Heritage Race
Hanoi, Vietnam
09 Nov, 2025 (Sun)
Running
Indonesia Women Half Marathon
Biomedical Campus BSD City, Indonesia
11 May, 2025 (Sun)
Running
Up to 36% off
Käringsund Triathlon
Käringsundby, Åland Islands
22-23 Aug, 2025 (Fri - Sat)
Triathlon, Swimming
From 10 EUR
Up to 14% off
5
Meia Maratona Matosinhos
Matosinhos, Portugal
04 May, 2025 (Sun)
Walking, Running
From 12 EUR14 EUR
5
Monterosa Est Himalayan Trail
Macugnaga, Italy
02 Aug, 2025 (Sat)
Trail running
From 30 EUR
Fishtail 100 - Ultra
Pokhara, Nepal
17 May, 2025 (Sat)
Trail running
Up to 60% off
5
Ultra Maratona Atlântica
Melides, Portugal
27 Jul, 2025 (Sun)
Trail running
From 10 EUR25 EUR
Amazean Jungle Trail
Betong District, Thailand
02-04 May, 2025 (Fri - Sun)
Trail running
Up to 28% off
Koh Chang Trail
Trat, Thailand
28 Sep, 2025 (Sun)
Trail running
Up to 43% off
Trento Half Marathon
Trento, Italy
05 Oct, 2025 (Sun)
Running
From 20 EUR35 EUR
5
Bangkok Airways Sukhothai Half Marathon
Mueang Kao, Thailand
27-28 Sep, 2025 (Sat - Sun)
Running
5
Bangkok Airways Trat Half Marathon
Wang Krachae, Thailand
16-17 Aug, 2025 (Sat - Sun)
Running
4
Bangkok Airways Samui Half Marathon
Koh Samui, Thailand
21-22 Jun, 2025 (Sat - Sun)
Running