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by Dockia Labs

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by Dockia Labs

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Marathons in Colorado 2026 | SportPlan
marathons

Marathons in Colorado

53 upcoming marathons in Colorado. Filter by date, exact distance, or elevation.

Browse by month

53 events found

53 eventos

Sort: recommended
DateEventSportLocationDist.53
13JUN
Barr Lake Trail Race
Running21.1 kmCommerce City
Running
Commerce City
21.1 km
20JUN
Estes Park Marathon
Running21.1 kmEstes Park
Running
Estes Park
21.1 km
20JUN
Run Juneteenth Day 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
27JUN
Slacker Half Marathon, Relay & 4 Mile Races
Running21.1 kmGeorgetown
Running
Georgetown
21.1 km
4JUL
6th Annual July 4th ROCK-IT RUN
Running21.1 kmCastle Rock
Running
Castle Rock
21.1 km
4JUL
July 4th Run 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
11JUL
All-Out Beat the Heat
Running21.1 kmWestminster
Running
Westminster
21.1 km
11JUL
Heatwave Half Marathon - Denver
Running21.1 kmDenver
Running
Denver
21.1 km
12JUL
Heatwave Half Marathon - Colorado Springs
Running21.1 kmColorado Springs
Running
Colorado Springs
21.1 km
18JUL
Summer Splash Prairie Dog Half Marathon, 10k & 5k
Running21.1 kmCastle Rock
Running
Castle Rock
21.1 km
25JUL
Aspen Valley Marathon
Running21.1 kmAspen
Running
Aspen
21.1 km
25JUL
Run for Coffee Lovers 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
1AUG
Aspen Backcountry
Running21.1 kmAspen
Running
Aspen
21.1 km
1AUG
Popsicle 5K/10K/Half - Colorado Springs
Running21.1 kmColorado Springs
Running
Colorado Springs
21.1 km
1AUG
Sheep Mountain Ultras
Running21.1 kmFairplay
Running
Fairplay
21.1 km
2AUG
Bound for Boston Marathon & Half Marathon - Denver
Running21.1 kmDenver
Running
Denver
21.1 km
8AUG
Georgetown to Idaho Springs Half Marathon
Running21.1 kmGeorgetown
Running
Georgetown
21.1 km
8AUG
Georgetown to Idaho Springs Half Marathon 2026
Running21.1 kmIdaho Springs
Running
Idaho Springs
21.1 km
15AUG
Mt. Sneffels Half Marathon, 10K & Kids Fun Run
Running21.1 kmRidgway
Running
Ridgway
21.1 km
15AUG
Run for PB&J 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
16AUG
Erie Half & 5k
Running21.1 kmErie
Running
Erie
21.1 km
23AUG
Pioneer Prairie Dog Half Marathon 10k & 5k
Running21.1 kmWestminster
Running
Westminster
21.1 km
29AUG
Sloth Run 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
29AUG
TBK Bank Thirsty 13 Half Marathon
Running21.1 kmDurango
Running
Durango
21.1 km
5SEP
Golden Harvest Half Marathon, 5k & 10k - Denver
Running21.1 kmDenver
Running
Denver
21.1 km
6SEP
Golden Harvest Half Marathon, 5k & 10k - Colorado Springs
Running21.1 kmColorado Springs
Running
Colorado Springs
21.1 km
7SEP
Labor Day Half Marathon, 10K and 5K
Running21.1 kmParker
Running
Parker
21.1 km
12SEP
Black Squirrel Half Marathon
Running21.1 kmBellvue
Running
Bellvue
21.1 km
12SEP
National Chocolate Day Run for Chocolates 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
12SEP
Snow Mountain Ranch Trail Running Festival
Running21.1 kmGrand Lake
Running
Grand Lake
21.1 km
12SEP
Snow Mtn Ranch Trail Festival
Running21.1 kmGrand County
Running
Grand County
21.1 km
13SEP
LEAD KING LOOP 25K, 8M, Kids Run
Running25 kmMarble
Running
Marble
25 km
13SEP
Nun Run
Running21.1 kmCentennial
Running
Centennial
21.1 km
19SEP
Beulah Challenge
Running21.1 kmBeulah
Running
Beulah
21.1 km
20SEP
Fall Equinox Marathon, Half Marathon & 5 Mile
Running21.1 kmFort Collins
Running
Fort Collins
21.1 km
25SEP
Red Feather Trail Jamboree
Running21.1 kmGoodell Corner
Running
Goodell Corner
21.1 km
26SEP
Monument Marathon
Running21.1 kmGering
Running
Gering
21.1 km
26SEP
Oktoberfest Run 5K/10K/13.1 - Denver/Aurora
Running21.1 kmCentennial
Running
Centennial
21.1 km
26SEP
Wild Wahatoya Runs
Running21.1 kmLa Veta
Running
La Veta
21.1 km
27SEP
Boulderthon: Boulder Marathon
Running21.1 kmBoulder
Running
Boulder
21.1 km
28SEP
Mainly Marathons Center of the Nation Series - Day 1
Running21.1 kmCheyenne
Running
Cheyenne
21.1 km
3OCT
Colorado Springs Marathon, Half, 5K, and Kids K
Running21.1 kmColorado Springs
Running
Colorado Springs
21.1 km
3OCT
Spooky Sprint - Denver
Running21.1 kmLittleton
Running
Littleton
21.1 km
3OCT
The Bear Chase Trail Races
Running21.1 kmLakewood
Running
Lakewood
21.1 km
4OCT
Windsor Marathon, Half Marathon, 10k & 5k
Running21.1 kmWindsor
Running
Windsor
21.1 km
10OCT
Breckenridge Road Marathon
Running21.1 kmBreckenridge
Running
Breckenridge
21.1 km
10OCT
Long View Marathon & Half Marathon
Running21.1 kmFort Collins
Running
Fort Collins
21.1 km
11OCT
Durango Marathon
Running21.1 kmDurango
Running
Durango
21.1 km
31OCT
Spooky Sprint - Colorado Springs
Running21.1 kmColorado Springs
Running
Colorado Springs
21.1 km
1NOV
Rim Rock Marathon & Half Marathon
Running21.1 kmFruita
Running
Fruita
21.1 km
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