Running Events in Colorado 2026-2027

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Boulderthon powered by lululemon: The Boulder Marathon

Sep

27

Boulderthon powered by lululemon: The Boulder Marathon

Sun, Sep 27, 2026

Boulder, US • Run 0.4mi - Run 26.2mi

May

31

BOLDERBoulder 2027

Mon, May 31, 2027

Boulder, US • Run 10km - Run 10km

Aug

19

Rocky Mountain Milestone Challenge

Wed, Aug 19, 2026

Granby, US • Run - Run 100mi

Aug

6

2027 Rocky Mountain Half Marathon & 5K

Fri, Aug 6, 2027

Estes Park, US • Run 5km - Run 13.1mi

2026 Life Time Leadville Trail 10K presented by La Sportiva

Aug

16

2026 Life Time Leadville Trail 10K presented by La Sportiva

Sun, Aug 16, 2026

Leadville, US • Run 10km

2026 Life Time Leadville Trail 100 Run presented by La Sportiva

Aug

22

2026 Life Time Leadville Trail 100 Run presented by La Sportiva

Sat, Aug 22, 2026

Leadville, US • Run 100mi

Sep

26

Great Bison Shuffle

Sat, Sep 26, 2026

Cheyenne, US • Run - Run 13.1mi

Aug

15

The Cheyenne Mountain Run

Sat, Aug 15, 2026

Colorado Springs, US • Run 3.1mi - Run 14mi

Aug

15

Miles for Migraine Colorado

Sat, Aug 15, 2026

Denver, US • Run 2mi - Run 5km

Aug

18

Into the Hills Eltuck 5k

Tue, Aug 18, 2026

Bellvue, US • Run 5km - Run 5km

Aug

22

Ram Run

Sat, Aug 22, 2026

Lakewood, US • Run 2km - Run 5km

Eltuck Valley 12K - Lory Summer Trail Series

Aug

25

Eltuck Valley 12K - Lory Summer Trail Series

Tue, Aug 25, 2026

Bellvue, US • Run 12km - Run 12km

Aug

29

Continental Divide Trail Run

Sat, Aug 29, 2026

Steamboat Springs, US • Run 5mi - Run 50km

Aug

29

TBK Bank Thirsty 13 Half Marathon

Sat, Aug 29, 2026

Durango, US • Run 13.1mi - Run 13.1mi

Rocky Mountain 5K presented by School District 11

Aug

29

Rocky Mountain 5K presented by School District 11

Sat, Aug 29, 2026

Colorado Springs, US • Run 1km - Run 3.1mi

Aug

29

Run for Hope - Colorado Springs

Sat, Aug 29, 2026

Colorado Springs, US • Run 1mi - Run 5km

Wine Run 5k at The Winery at Holy Cross Abbey

Aug

30

Wine Run 5k at The Winery at Holy Cross Abbey

Sun, Aug 30, 2026

Cañon City, US • Run - Run 5km

Aug

30

James Test Site

Sun, Aug 30, 2026

Lyons, US • Run - Run 10km

Sep

5

Cirque Series - Arapahoe Basin, CO

Sat, Sep 5, 2026

Keystone, US • Run - Run 9.4mi

Sep

5

Demon Dash

Sat, Sep 5, 2026

Arvada, US • Run 5km - Run 5km

Sep

6

10k at 10,000 Feet

Sun, Sep 6, 2026

Steamboat Springs, US • Run 4mi - Run 8mi

Sep

7

Oak Creek No Fun Run

Mon, Sep 7, 2026

Oak Creek, US • Run 5km - Run 5km

Sep

7

Labor Day Half Marathon

Mon, Sep 7, 2026

Parker, US • Run 5km - Run 13.1mi

Sep

7

Virtual Philly Labor Day 5K & 10K

Mon, Sep 7, 2026

US • Run 5km - Run 10km

Sep

12

53rd Annual Imogene Pass Run

Sat, Sep 12, 2026

Ouray, US • Run 17.1mi - Run 17.1mi

Trail Sisters Women's Half Marathon & 10k

Sep

12

Trail Sisters Women's Half Marathon & 10k

Sat, Sep 12, 2026

Buena Vista, US • Run 10km - Run 13.1mi

Sep

12

6 Dot Dash

Sat, Sep 12, 2026

Littleton, US • Run 5km - Run 5km

Sep

12

Spirit of the Valley 5k

Sat, Sep 12, 2026

Grand Junction, US • Run - Run 5km

Sep

12

For The City Network 5K

Sat, Sep 12, 2026

Greeley, US • Run 5km

Sep

13

Honey Bee Hustle

Sun, Sep 13, 2026

Loveland, US • Run - Run

Sep

13

RMRR September Trophy Series

Sun, Sep 13, 2026

Thornton, US • Run 5km - Run 10km

Colorado Run for the Fallen Run/Walk/Ruck

Sep

13

Colorado Run for the Fallen Run/Walk/Ruck

Sun, Sep 13, 2026

Monument, US • Run - Run

Sep

19

Pikes Peak Ascent

Sat, Sep 19, 2026

Manitou Springs, US • Run 13.32mi - Run 13.32mi

Sep

19

Beulah Challenge and OverIt Series

Sat, Sep 19, 2026

Beulah Valley, US • Run 3.1mi - Run 26.2mi

Sep

19

Autumn Run

Sat, Sep 19, 2026

Buena Vista, US • Run 1km - Run 13.1mi

Sep

19

Lederhosen Race 2026

Sat, Sep 19, 2026

Red Feather Lakes, US • Run 3.6mi - Run 4mi

Sep

19

All Hands on Deck The Pirates 5K

Sat, Sep 19, 2026

Colorado Springs, US • Run 5km

Denver: Walk With Autism and Resource Fair

Sep

19

Denver: Walk With Autism and Resource Fair

Sat, Sep 19, 2026

Denver, US • Run - Run 6km

Sep

20

Pikes Peak Marathon

Sun, Sep 20, 2026

Manitou Springs, US • Run 26.2mi - Run 26.2mi

7th ANNUAL PAUL'S MYSTERY SHIP WALK TO END ALS

Sep

20

7th ANNUAL PAUL'S MYSTERY SHIP WALK TO END ALS

Sun, Sep 20, 2026

Castle Rock, US • Run 2mi - Run 2mi

Sep

20

Farmers 5000

Sun, Sep 20, 2026

Wheat Ridge, US • Run - Run 5km

Sep

20

20th Annual Golden Gallop

Sun, Sep 20, 2026

Golden, US • Run - Run 12.4mi

Sep

25

Boggy Draw Bear Chase

Fri, Sep 25, 2026

Montezuma County, US • Run 3km - Run 5km

Sep

26

McGinn Memorial Cross Country Challenge

Sat, Sep 26, 2026

Pagosa Springs, US • Run 3km - Run 5km

Sep

26

NIGHT NATION RUN - DENVER

Sat, Sep 26, 2026

Commerce City, US • Run 5km - Run 5km

Mountain Marmot Trail Run presented by Durango Running Company

Sep

26

Mountain Marmot Trail Run presented by Durango Running Company

Sat, Sep 26, 2026

Durango, US • Run 12mi - Run 12mi

Parker Parks and Recreation So Long to Summer 5K/10K

Sep

26

Parker Parks and Recreation So Long to Summer 5K/10K

Sat, Sep 26, 2026

Parker, US • Run 3.1mi - Run 6.2mi

Sep

26

Estes Epic

Sat, Sep 26, 2026

Estes Park, US • Run 15mi - Run 62mi

Showing 1 - 48 of 169 events