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Trail running races 2024 - 2025: half marathons en Colorado

All-Out Summer Breeze

Arvada, USA
07 Jun, 2025 (Sat)
Trail running
13.1 mi +2 more

Summer Breeze

Arvada, USA
07 Jun, 2025 (Sat)
Trail running
13.1 mi +2 more

Leadville Trail Marathon

Leadville, USA
28 Jun, 2025 (Sat)
Trail running
21.097 km +2 more
Map
Leadville Trail Marathon

Byers Peak Stampede Half Marathon & 5K Run

Grand County, USA
23 Aug, 2025 (Sat)
Trail running
13.1 mi +1 more

Recommended for you

Dynafit Arrowhead Half Marathon

Parshall, USA
23 Aug, 2025 (Sat)
Trail running
21.097 km +1 more

Staunton Rocks! Marathon & Half

Pine, USA
23 Aug, 2025 (Sat)
Trail running
13.1 mi +1 more

Telluride Mountain Run

Telluride, USA
23 Aug, 2025 (Sat)
Trail running
13 mi +2 more

Westminster Night Trail

Westminster, USA
23 Aug, 2025 (Sat)
Trail running
21.1 km +4 more

Snow Mountain Ranch Trail Run

Granby, USA
13 Sep, 2025 (Sat)
Trail running
21.1 km +4 more

Trail Sisters Women's Half Marathon

Buena Vista, USA
13 Sep, 2025 (Sat)
Trail running
13.1 mi +1 more

This week’s best deals

Image of Ostrava City Marathon
Up to 68% off
1

Ostrava City Marathon

Ostrava, Czech Republic
14 Sep, 2025 (Sun)
Running
From 5 USD
Image of Corri Trieste
Up to 60% off

Corri Trieste

Trieste, Italy
17 May, 2025 (Sat)
Running
From 11 USD
Image of 15 km de Woluwé-St-Lambert
Up to 50% off
5
Map
Map

15 km de Woluwé-St-Lambert

Woluwe, Belgium
11 May, 2025 (Sun)
Walking, Running, Trail running
From 2 USD
Image of VnExpress Marathon Amazing Ha Long
Up to 50% off
4

VnExpress Marathon Amazing Ha Long

Hạ Long, Vietnam
25 May, 2025 (Sun)
Running
From 17 USD
Image of Narva Energy Run
Up to 50% off

Narva Energy Run

Narva, Estonia
28-29 Jun, 2025 (Sat - Sun)
Running
From 6 USD
Image of Trakai Triathlon
Up to 50% off

Trakai Triathlon

Trakai, Lithuania
29 Jun, 2025 (Sun)
Triathlon
From 27 USD
Image of Ayvalik Half Marathon
Up to 50% off
5

Ayvalik Half Marathon

Ayvalık, Turkey
13 Sep, 2025 (Sat)
Running
From 27 USD
Image of Hyundai Porto Half Marathon
Up to 50% off
4.6

Hyundai Porto Half Marathon

Porto, Portugal
14 Sep, 2025 (Sun)
Running
From 11 USD
Image of Pula Marathon
Up to 50% off
5
Map
Map

Pula Marathon

Pula, Croatia
20 Sep, 2025 (Sat)
Nordic walking, Running
From 11 USD
Image of Pisa Half Marathon
Up to 50% off

Pisa Half Marathon

Pisa, Italy
12 Oct, 2025 (Sun)
Running
From 11 USD
Image of Palermo Marathon and Half Marathon
Up to 50% off
4.5

Palermo Marathon and Half Marathon

Palermo, Italy
16 Nov, 2025 (Sun)
Running
From 21 USD
Image of Sarajevo Half Marathon
Up to 49% off
4.2

Sarajevo Half Marathon

Sarajevo, Bosnia and Herzegovina
21 Sep, 2025 (Sun)
Running
From 28 USD
Image of Banja Luka Marathon
Up to 48% off
2.6

Banja Luka Marathon

Banja Luka, Bosnia and Herzegovina
28 Sep, 2025 (Sun)
Running
From 18 USD
Image of XI Stellantis&you port de palma triathlon mallorca
Up to 47% off
5

XI Stellantis&you port de palma triathlon mallorca

Palma, Spain
21 Sep, 2025 (Sun)
Triathlon
From 24 USD
Image of Key West Half Marathon
Up to 47% off
5

Key West Half Marathon

Key West, USA
17-18 Jan, 2026 (Sat - Sun)
Running
From 46 USD
Image of Primiero Dolomiti Marathon
Up to 46% off
Map
Map

Primiero Dolomiti Marathon

Fiera di Primiero, Italy
05 Jul, 2025 (Sat)
Trail running
From 16 USD
Image of Lake Maggiore Marathon
Up to 46% off
4.8

Lake Maggiore Marathon

Verbania, Italy
09 Nov, 2025 (Sun)
Running
From 21 USD
Image of Chisinau International Marathon
Up to 43% off
4.7

Chisinau International Marathon

Chișinău, Moldova
28 Sep, 2025 (Sun)
Running
From 25 USD
Image of Cairns Marathon
Up to 43% off

Cairns Marathon

Cairns, Australia
13 Jul, 2025 (Sun)
Running, Walking
From 24 USD
Image of Sunshine Coast Marathon Festival
Up to 43% off
4.5

Sunshine Coast Marathon Festival

Mooloolaba, Australia
03 Aug, 2025 (Sun)
Running, Walking
From 24 USD

Registration just opened

Image of VnExpress Marathon Amazing Ha Long
Up to 50% off
4

VnExpress Marathon Amazing Ha Long

Hạ Long, Vietnam
25 May, 2025 (Sun)
Running
From 17 USD
Image of Palm Beaches Marathon
Up to 31% off

Palm Beaches Marathon

Palm Beach, USA
13-14 Dec, 2025 (Sat - Sun)
Running
From 41 USD
Image of International Peace Marathon of Kigali
4

International Peace Marathon of Kigali

Kigali, Rwanda
08 Jun, 2025 (Sun)
Running
From 31 USD
Image of Uganda Wildlife Marathon
4

Uganda Wildlife Marathon

Lira, Uganda
02 Mar, 2025 (Sun)
Running
From 6 USD
Image of Almería Half Marathon
Map
Map

Almería Half Marathon

Almeria, Spain
06 Apr, 2025 (Sun)
Running
From 23 USD
Image of Alicante – Santa Pola, The Greatest Mediterranean Race 21k
Up to 21% off
5

Alicante – Santa Pola, The Greatest Mediterranean Race 21k

Alicante, Spain
09 Nov, 2025 (Sun)
Running
From 27 USD
Image of The One in the Park - Richmond - Summer

The One in the Park - Richmond - Summer

Greater London, United Kingdom
01 Jun, 2025 (Sun)
Trail running
From 31 USD
Image of Ra Rueng Run
Up to 22% off

Ra Rueng Run

Tambon Sam Roi Yot, Thailand
01 Jun, 2025 (Sun)
Running
From 18 USD
Image of Ultra Skyrunning Madeira

Ultra Skyrunning Madeira

Santana, Portugal
13-14 Jun, 2025 (Fri - Sat)
Trail running
From 16 USD
Image of Ultra Trail Cao Bang
Up to 35% off

Ultra Trail Cao Bang

Cao Bằng, Vietnam
28-30 Nov, 2025 (Fri - Sun)
Trail running
From 24 USD
Image of The One in the Park - Richmond - Winter

The One in the Park - Richmond - Winter

Greater London, United Kingdom
30 Nov, 2025 (Sun)
Running
From 31 USD
Image of 10 km Esterel Cote d'Azur

10 km Esterel Cote d'Azur

Fréjus, France
14 Jun, 2025 (Sat)
Running
From 25 USD
Image of The Big Pilgrimage
Map
Map

The Big Pilgrimage

Southampton, United Kingdom
17 Aug, 2025 (Sun)
Running
From 48 USD
Image of Jurajski Festiwal Biegowy
Up to 41% off

Jurajski Festiwal Biegowy

Podlesice, Poland
19-20 Sep, 2025 (Fri - Sat)
Trail running
From 23 USD
Image of Abersoch Half Marathon

Abersoch Half Marathon

Abersoch, United Kingdom
20 Sep, 2025 (Sat)
Trail running
From 11 USD
Image of Neon Run Samui

Neon Run Samui

Thailand, Thailand
03 May, 2025 (Sat)
Running
From 18 USD
Image of Phuket 100K Ultra Marathon

Phuket 100K Ultra Marathon

Phuket, Thailand, Thailand
07 Jun, 2025 (Sat)
Running
From 51 USD
Image of International Ultra Trail Vjosa Wild River

International Ultra Trail Vjosa Wild River

Tepelenë, Albania
25-26 Oct, 2025 (Sat - Sun)
Trail running
From 11 USD
Image of Cat Tien Jungle Paths
Up to 34% off

Cat Tien Jungle Paths

Cat Tien National Park, Vietnam
27 Apr, 2025 (Sun)
Trail running
From 21 USD
Image of Bangsaen10
Up to 19% off

Bangsaen10

Bang Saen, Thailand
25 May, 2025 (Sun)
Running
From 48 USD

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