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Running Events in Colorado 2025-2026

270events found
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Greeley Freedom 5k Walk & Run
4
Jul
Greeley Freedom 5k Walk & Run

Greeley, US

Fri 4th Jul 2025

The Alma Foundation Race in the Clouds Dirt Festival
10
Jul
The Alma Foundation Race in the Clouds Dirt Festival

Alma, US

Thu 10th Jul 2025

Silverheels Trail Runs
11
Jul
Silverheels Trail Runs

Como, US

Fri 11th Jul 2025

All-Out Dog Days
12
Jul
All-Out Dog Days

Westminster, US

Sat 12th Jul 2025

Grin & Bear It
12
Jul
Grin & Bear It

Crested Butte, US

Sat 12th Jul 2025

STRS #4 - Tom's Baby Turnaround
16
Jul
STRS #4 - Tom's Baby Turnaround

Breckenridge, US

Wed 16th Jul 2025

All American 4 & 8 Mile - Denver
19
Jul
All American 4 & 8 Mile - Denver

Westminster, US

Sat 19th Jul 2025

Audi Power of Four Trail Run
19
Jul
Audi Power of Four Trail Run

Aspen, US

Sat 19th Jul 2025

Summer Splash Prairie Dog Half, 10k, & 5k
19
Jul
Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, US

Sat 19th Jul 2025

All American 4 & 8 Mile - Colorado Springs
20
Jul
All American 4 & 8 Mile - Colorado Springs

Colorado Springs, US

Sun 20th Jul 2025

Never Summer 100km & 60km
25
Jul
Never Summer 100km & 60km

Walden, US

Fri 25th Jul 2025

STRS #5 - Carter Park Scurry
30
Jul
STRS #5 - Carter Park Scurry

Breckenridge, US

Wed 30th Jul 2025

Sheep Mountain Trail Runs
2
Aug
Sheep Mountain Trail Runs

Fairplay, US

Sat 2nd Aug 2025

All-Out Runapalooza
2
Aug
All-Out Runapalooza

Arvada, US

Sat 2nd Aug 2025

Bound for Boston Marathon & Half Marathon - Denver
3
Aug
Bound for Boston Marathon & Half Marathon - Denver

Denver, US

Sun 3rd Aug 2025

Holy COW Trail Stampede
9
Aug
Holy COW Trail Stampede

Westminster, US

Sat 9th Aug 2025

2025 CKF Leadville Trail 100 Run
16
Aug
2025 CKF Leadville Trail 100 Run

Aspen, US

Sat 16th Aug 2025

Summer Sizzler- Denver
16
Aug
Summer Sizzler- Denver

Denver, US

Sat 16th Aug 2025

Erie Half & 5k
17
Aug
Erie Half & 5k

Erie, US

Sun 17th Aug 2025

Summer Sizzler- Colorado Springs
17
Aug
Summer Sizzler- Colorado Springs

Colorado Springs, US

Sun 17th Aug 2025

HRCA Wildcat Mountain Trail Races
6
Sep
HRCA Wildcat Mountain Trail Races

Littleton, US

Sat 6th Sep 2025

Black Squirrel Half Marathon
6
Sep
Black Squirrel Half Marathon

Bellvue, US

Sat 6th Sep 2025

All-Out Fall Fest
13
Sep
All-Out Fall Fest

Westminster, US

Sat 13th Sep 2025

Spooky Sprint - Colorado Springs
13
Sep
Spooky Sprint - Colorado Springs

Colorado Springs, US

Sat 13th Sep 2025

The Denver 5k
13
Sep
The Denver 5k

Denver, US

Sat 13th Sep 2025

Spooky Sprint - Denver
14
Sep
Spooky Sprint - Denver

Denver, US

Sun 14th Sep 2025

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon
20
Sep
Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Cañon City, US

Sat 20th Sep 2025

Miles 4 Madison 5K & 1K
20
Sep
Miles 4 Madison 5K & 1K

Littleton, US

Sat 20th Sep 2025

Red Feather Trail Jamboree
26
Sep
Red Feather Trail Jamboree

Red Feather Lakes, US

Fri 26th Sep 2025

HRCA Oktoberfest 5K
27
Sep
HRCA Oktoberfest 5K

Highlands Ranch, US

Sat 27th Sep 2025

Pioneer Prairie Dog Half, 10k & 5k
27
Sep
Pioneer Prairie Dog Half, 10k & 5k

Westminster, US

Sat 27th Sep 2025

West Line Winder
27
Sep
West Line Winder

Buena Vista, US

Sat 27th Sep 2025

Break Your Neck: Walk, Run, or Roll
27
Sep
Break Your Neck: Walk, Run, or Roll

Pueblo, US

Sat 27th Sep 2025

Sangre de Cristo Trail Festival
27
Sep
Sangre de Cristo Trail Festival

Westcliffe, US

Sat 27th Sep 2025

Toughest Mudder Colorado
27
Sep
Toughest Mudder Colorado

Fort Carson, US

Sat 27th Sep 2025

Center of the Nation Series - Day 2 (CO)
30
Sep
Center of the Nation Series - Day 2 (CO)

Sterling, US

Tue 30th Sep 2025

Colorado Springs Marathon, Half, 5K, and Kids K
4
Oct
Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, US

Sat 4th Oct 2025

Windsor Marathon, Half Marathon, 10k & 5k
5
Oct
Windsor Marathon, Half Marathon, 10k & 5k

Windsor, US

Sun 5th Oct 2025

Breckenridge Road Marathon
11
Oct
Breckenridge Road Marathon

Breckenridge, US

Sat 11th Oct 2025

The bRUNch Run™
12
Oct
The bRUNch Run™

Denver, US

Sun 12th Oct 2025

Indian Creek Trail Runs
18
Oct
Indian Creek Trail Runs

Sedalia, US

Sat 18th Oct 2025

The Great Trailhead Foot Race 5 & 10 Miler
18
Oct
The Great Trailhead Foot Race 5 & 10 Miler

Lakewood, US

Sat 18th Oct 2025

Blue Sky Trail Marathon & Half Marathon
18
Oct
Blue Sky Trail Marathon & Half Marathon

Fort Collins, US

Sat 18th Oct 2025

City Park 5k & 1 Mile Walk of Hope for Pancreatic Cancer Research
1
Nov
City Park 5k & 1 Mile Walk of Hope for Pancreatic Cancer Research

Denver, US

Sat 1st Nov 2025

Turkey Trails - Colorado Springs
1
Nov
Turkey Trails - Colorado Springs

Colorado Springs, US

Sat 1st Nov 2025

All-Out Kooky-Spooky
2
Nov
All-Out Kooky-Spooky

Jefferson County, US

Sun 2nd Nov 2025

HRCA Backcountry Wilderness Half Marathon
8
Nov
HRCA Backcountry Wilderness Half Marathon

Lone Tree, US

Sat 8th Nov 2025

BINGO! Trail Party
8
Nov
BINGO! Trail Party

Byers, US

Sat 8th Nov 2025

Showing 193 - 240 of 270 events
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