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Endurance races calendar 2025 - 2026 : Boulder
39 events
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Dash & Dine 5k Run Series #1
Boulder, USA
29 Apr, 2025 (Tue)
Running
5 km
BOLDER Boulder
Boulder, USA
26 May, 2025 (Mon)
Running
10 km
Map
Stroke & Stride #1
Boulder, USA
05 Jun, 2025 (Thu)
Swimrun
3.6 mi, 4.1 mi
Swimming
0.5 mi, 1 mi
Running
5 km
Colorado Triathlon
Boulder, USA
07 Jun, 2025 (Sat)
Triathlon
750 m
17 mi
3.1 mi
1500 m
23.5 mi
10 km
Duathlon
5 km
23.5 mi
10 km
Aquabike
1500 m
24.8 mi
Recommended for you
Earth Day Run - Manila
Pasay, Philippines
27 Apr, 2025 (Sun)
Running
From 18 EUR
Earth Day Run - Davao
Davao City, Philippines
27 Apr, 2025 (Sun)
Running
From 18 EUR
Map
Lema Trail
Monte Lema, Switzerland, Switzerland
27 Apr, 2025 (Sun)
Trail running, Dog run, Walking
From 43 EUR
4.5
Türkiye İş Bankası 20th Istanbul Half Marathon
Istanbul, Turkey
27 Apr, 2025 (Sun)
Running
From 90 EUR
3.3
Map
Nice Half Marathon
Nice, France
27 Apr, 2025 (Sun)
Running
From 19 EUR
1
Banjul International Marathon
Serrekunda, Gambia
27 Apr, 2025 (Sun)
Running, Walking
From 9 EUR
4.3
Kaunas Marathon
Kaunas, Lithuania
27 Apr, 2025 (Sun)
Running
From 12 EUR
Richmond Park 5k, 10k and Half Marathon - April
Greater London, United Kingdom
27 Apr, 2025 (Sun)
Running
From 29 EUR
The Drop - Winchester
Winchester, United Kingdom
27 Apr, 2025 (Sun)
Running
From 52 EUR
Tissington Trail Marathon
Derbyshire, United Kingdom
27 Apr, 2025 (Sun)
Trail running
From 48 EUR
Earth Day Run - Cebu
Cebu City, Philippines
27 Apr, 2025 (Sun)
Running
From 18 EUR
4
Chia21 Half Marathon
Chia, Italy
27 Apr, 2025 (Sun)
Running
From 18 EUR
Stroke & Stride #2
Boulder, USA
11 Jun, 2025 (Wed)
Swimrun
3.6 mi, 4.1 mi
Swimming
0.5 mi, 1 mi
Running
5 km
IRONMAN 70.3 Boulder
Boulder, USA
14 Jun, 2025 (Sat)
Triathlon
1.9 km
90 km
21.1 km
Stroke & Stride #3
Boulder, USA
19 Jun, 2025 (Thu)
Swimrun
3.6 mi, 4.1 mi
Swimming
0.5 mi, 1 mi
Running
5 km
Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk
Boulder, USA
22 Jun, 2025 (Sun)
Running
5 km
Stroke & Stride #4
Boulder, USA
26 Jun, 2025 (Thu)
Swimrun
3.6 mi, 4.1 mi
Swimming
0.5 mi, 1 mi
Running
5 km
Pearl Street Mile
Boulder, USA
28 Jun, 2025 (Sat)
Running
800 m, 1 mi
Bestsellers
4.4
EDP Lisbon Marathon
Lisboa, Portugal
25-26 Oct, 2025 (Sat - Sun)
Running
From 50 EUR
Up to 33% off
4.7
Generali Malaga Marathon
Málaga, Spain
13-14 Dec, 2025 (Sat - Sun)
Running
From 12 EUR18 EUR
Up to 29% off
4.4
Angkor Wat International Half Marathon
Krong Siem Reap, Cambodia
07 Dec, 2025 (Sun)
Running
From 22 EUR31 EUR
Up to 33% off
4.5
Map
Istanbul Marathon
Fatih, Turkey
02 Nov, 2025 (Sun)
Running
From 80 EUR120 EUR
4.8
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
adidas Stockholm Half Marathon
Södermalm, Sweden
30 Aug, 2025 (Sat)
Running
From 73 EUR82 EUR
4.5
Run Rome the Marathon
Rome, Italy
21-22 Mar, 2026 (Sat - Sun)
Running
From 89 EUR
4.2
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
From 9 EUR
4.2
Rural Kutxa San Sebastian Half Marathon
Donostia-San Sebastian, Spain
05 Oct, 2025 (Sun)
Running
From 38 EUR
4.5
Türkiye İş Bankası 20th Istanbul Half Marathon
Istanbul, Turkey
27 Apr, 2025 (Sun)
Running
From 90 EUR
4.5
Vilnius Half Marathon
Vilnius city municipality, Lithuania
24 May, 2025 (Sat)
Running
From 15 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
From 14 EUR
4.6
JTBC Seoul Marathon
Seoul, South Korea
02 Nov, 2025 (Sun)
Running
From 70 EUR
Up to 20% off
4
Angkor Empire Marathon
Angkor Wat, Cambodia
03 Aug, 2025 (Sun)
Running
From 18 EUR22 EUR
Up to 42% off
4.6
TotalEnergies Malaga Half Marathon
Málaga, Spain
15 Mar, 2026 (Sun)
Running
From 28 EUR48 EUR
3.8
Phnom Penh International Half Marathon
Phnom Penh, Cambodia
15 Jun, 2025 (Sun)
Running
From 22 EUR
4.7
Breast Cancer Run 5K Fun Run
Kinshasa, Democratic Republic of the Congo
05 Oct, 2025 (Sun)
Running
From 9 EUR
This week’s best deals
Up to 65% off
3.9
Standard Chartered Hanoi Marathon - Heritage Race
Hanoi, Vietnam
09 Nov, 2025 (Sun)
Running
From 14 EUR35 EUR
Up to 65% off
4.4
Halong Bay Heritage Marathon
Thành phố Hạ Long, Vietnam
23 Nov, 2025 (Sun)
Running
From 14 EUR33 EUR
Up to 65% off
4.5
Can Tho Heritage Marathon
Vietnam, Vietnam
21 Dec, 2025 (Sun)
Running
From 14 EUR35 EUR
Up to 60% off
5
Ultra Maratona Atlântica
Melides, Portugal
27 Jul, 2025 (Sun)
Trail running
From 10 EUR25 EUR
Up to 56% off
5
Map
Maga Circe Marathon
San Felice Circeo, Italy
01 Feb, 2026 (Sun)
Running, Walking
From 12 EUR15 EUR
Up to 51% off
Apfel Arena Makarska Half Marathon
Makarska, Croatia
25-26 Oct, 2025 (Sat - Sun)
Running
From 22 EUR37 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, Czech Republic
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 50% off
4.3
ZAGREB21 – Zagreb Spring Half Marathon powered by heineken 0.0
Zagreb, Croatia
21-22 Mar, 2026 (Sat - Sun)
Running
From 15 EUR25 EUR
Up to 50% off
4.3
Sarajevo Half Marathon
Sarajevo, Bosnia and Herzegovina
21 Sep, 2025 (Sun)
Running
From 26 EUR52 EUR
Up to 47% off
5
Font Vella Lanzarote International Marathon
Costa Teguise, Spain
05-06 Dec, 2025 (Fri - Sat)
Running, Wheelchair
From 8 EUR15 EUR
Up to 47% off
5
Generali Tranquilidade Half Marathon of Discoveries
Lisboa, Portugal
07 Dec, 2025 (Sun)
Running
From 8 EUR15 EUR
Up to 46% off
5
Map
Timisoara 21K
Timișoara, Romania
08 Mar, 2026 (Sun)
Running
From 19 EUR35 EUR
Up to 46% off
Ta Nang Ultra Trail
Đức Trọng, Vietnam
21-22 Nov, 2025 (Fri - Sat)
Trail running
From 33 EUR60 EUR
Up to 45% off
Map
EPIC Azores by Decathlon
Vila Franca do Campo, Portugal
05-06 Dec, 2025 (Fri - Sat)
Trail running
From 20 EUR30 EUR
Up to 45% off
4.6
Murcia Marathon
Murcia, Spain
01 Feb, 2026 (Sun)
Running
From 14 EUR23 EUR
Registration just opened
4.5
Run Rome the Marathon
Rome, Italy
21-22 Mar, 2026 (Sat - Sun)
Running
From 89 EUR
Up to 15% off
Læsø Ultra
Vesterø Havn, Denmark
20 Sep, 2025 (Sat)
Running, Walking
From 50 EUR57 EUR
Up to 23% off
Meia Maratona do Ameal - Arte e Meios
Ameal, Portugal
21 Sep, 2025 (Sun)
Running, Walking
From 11 EUR14 EUR
4.3
Dubai Marathon
Dubai, United Arab Emirates
01 Feb, 2026 (Sun)
Running
From 44 EUR
3.6
Ras Al Khaimah Half Marathon
Ras Al Khaimah, United Arab Emirates
14 Feb, 2026 (Sat)
Running
From 9 EUR
Ultra Trail Lago Maggiore
Verbania, Italy
27 Sep, 2025 (Sat)
Trail running
From 20 EUR
5
Arctic Marathon Finland
Rovaniemi, Finland
07 Apr, 2026 (Tue)
Trail running
From 28 EUR
Up to 42% off
4.6
TotalEnergies Malaga Half Marathon
Málaga, Spain
15 Mar, 2026 (Sun)
Running
From 28 EUR48 EUR
5
Maya Marathon. Run in the jungle
Cozumel, Mexico
14 Dec, 2025 (Sun)
Running
From 30 EUR
5
Long Beach Marathon
Long Beach, USA
04-05 Oct, 2025 (Sat - Sun)
Running, Cycling
From 61 EUR
Up to 10% off
Patagonian International Marathon
Punta Arenas, Chile
06 Sep, 2025 (Sat)
Trail running
From 171 EUR191 EUR
Binter Night Run Zaragoza
Zaragoza, Spain
27 Sep, 2025 (Sat)
Running
From 5 EUR
Sendero del Jaguar, Hiking Retreat
Oaxaca, Mexico
13 Nov, 2025 (Thu)
Trail running
From 113 EUR
Map
Trail Running & SUP Challenge Cuiyunshan
Zhangjiakou, China
05-06 Jul, 2025 (Sat - Sun)
Trail running, Adventure race
From 44 EUR
Trail d'Santiago
São Jorge dos Órgãos, Cape Verde
28 Sep, 2025 (Sun)
Trail running, Walking
From 25 EUR
Fogo Vulcan Trail
Cabo Verde, Cape Verde
25-26 Oct, 2025 (Sat - Sun)
Trail running, Walking
From 25 EUR
Santo Antão Triangle Trail
Cabo Verde, Cape Verde
05 Dec, 2025 (Fri)
Trail running, Walking
From 50 EUR
Up to 38% off
4.5
Reggae Marathon, Half Marathon, 10k & 5K
Negril, Jamaica
07 Dec, 2025 (Sun)
Running
From 44 EUR70 EUR
Up to 47% off
5
Generali Tranquilidade Half Marathon of Discoveries
Lisboa, Portugal
07 Dec, 2025 (Sun)
Running
From 8 EUR15 EUR
Shulin Grassland 100 Ultra Trail Challenge
承德市, China
20 Jul, 2025 (Sun)
Trail running
From 56 EUR
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