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18 Half Marathon Colorado

Sloth Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-271274-1768498380.3273-0.bPAstm.png

Sloth Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Aug 29, 2026

Running > 1 mile, 10k, 5k, Half Marathon

Golden Harvest Half Marathon & 5k/10k - Denver - Denver, CO - genericImage-websiteLogo-266273-1761746441.7274-0.bPaH4j.png

Golden Harvest Half Marathon & 5k/10k - Denver

Denver, CO

Sat - Sep 05, 2026

Running > 1 mile, 5k, Half Marathon

Golden Harvest Half Marathon & 5k/10k - Colorado Springs - Colorado Springs, CO - genericImage-websiteLogo-266273-1761328678.0091-0.bO-74M.png

Golden Harvest Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, CO

Sun - Sep 06, 2026

Running > 5k, Half Marathon, 1 mile

National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-271314-1768498886.8218-0.bPAsBg.png

National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Sep 12, 2026

Running > 5k, 10k, Half Marathon, 1 mile

Black Squirrel Half Marathon - Bellvue, CO - genericImage-websiteLogo-243088-1733419557.6842-0.bNuEiL.png

Black Squirrel Half Marathon

Bellvue, CO

Sat - Sep 12, 2026

Running > Half Marathon

Oktoberfest Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270828-1768499607.6052-0.bPAsMx.png

Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Sep 26, 2026

Running > Half Marathon

Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado - Boulder, CO - genericImage-websiteLogo-276702-1772665214.0566-0.bPQlL-.png

Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado

Boulder, CO

Sun - Sep 27, 2026

Girls on the Run Rockies Boulderthon SoleMates 2026 - Boulder, CO - genericImage-websiteLogo-269326-1767723671.938-0.bPxvkx.png

Girls on the Run Rockies Boulderthon SoleMates 2026

Boulder, CO

Sun - Sep 27, 2026

Running > Half Marathon

2026 Center of the Nation Series - Day 2 (CO) - Sterling, CO - 0fe8efc4-838a-4820-8725-eb975da710d5.png

2026 Center of the Nation Series - Day 2 (CO)

Sterling, CO

Sep 29, 2026 - Sep 30, 2026

Running > Marathon, 10k, 5k, Half Marathon

Colorado Springs Marathon - Colorado Springs, CO - CSM_Vert_Wevents_Pos.png

Colorado Springs Marathon

Colorado Springs, CO

Sat - Oct 03, 2026 @ 7:00 AM

Running > Half Marathon, Marathon, 5k

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Cookie Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270827-1768499663.1178-0.bPAsNp.png

Cookie Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Oct 10, 2026

Running > Half Marathon

Breckenridge Road Marathon - Breckenridge, CO - BRM_LOGO.png

Breckenridge Road Marathon

Breckenridge, CO

Oct 10, 2026 - Oct 11, 2026 (7:00 AM)

Running > 10k, 5k, Half Marathon, Marathon

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Durango Marathon - Durango, CO - genericImage-websiteLogo-269785-1765772981.4863-0.bPp461.png

Durango Marathon

Durango, CO

Sun - Oct 11, 2026

Running > Marathon, Half Marathon

Westy Half & 5k - Westminster, CO - 10.2021-Westy-Half.png

Westy Half & 5k

Westminster, CO

Sun - Oct 11, 2026 @ 8:00 AM

Running > 5k, Half Marathon

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-271248-1768499966.5873-0.bPAsR-.png

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Oct 31, 2026

2026 Southwest Series - Day 2 (CO) - Durango, CO - 0fe8efc4-838a-4820-8725-eb975da710d5.png

2026 Southwest Series - Day 2 (CO)

Durango, CO

Nov 9, 2026 - Nov 10, 2026

Salute to Veterans 5K/10K/Half Marathon - Denver - Aurora, CO - genericImage-websiteLogo-237374-1776213299.4898-0.bP3T0Z.png

Salute to Veterans 5K/10K/Half Marathon - Denver

Aurora, CO

Sat - Nov 14, 2026

Run for Mental Health 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270815-1768499680.5521-0.bPAsNG.png

Run for Mental Health 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Nov 14, 2026

Salute to Veterans 5K/10K/Half Marathon - Colorado Springs - Colorado Springs, CO - genericImage-websiteLogo-237374-1776213299.4898-0.bP3T0Z.png

Salute to Veterans 5K/10K/Half Marathon - Colorado Springs

Colorado Springs, CO

Sun - Nov 15, 2026

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270817-1768484444.1991-0.bPAo5C.png

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Nov 28, 2026

Running > Half Marathon

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270817-1768484444.1991-0.bPAo5C.png

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Dec 12, 2026

Running > Half Marathon

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270817-1768484444.1991-0.bPAo5C.png

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Dec 26, 2026

Running > Half Marathon

MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-262321-1768465659.9349-0.bPAkt7.png

MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Jan 16, 2027

Running > Half Marathon

Coffee Lover Run DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-262321-1768465659.9349-0.bPAkt7.png

Coffee Lover Run DENVER/AURORA

Centennial, CO

Sat - Jan 30, 2027

Valentine's Day Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-262321-1768465659.9349-0.bPAkt7.png

Valentine's Day Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Feb 13, 2027

Run Together Against Breast Cancer DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-262321-1768465659.9349-0.bPAkt7.png

Run Together Against Breast Cancer DENVER/AURORA

Centennial, CO

Sat - Feb 27, 2027

Running > Half Marathon

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-266638-1768494059.0852-0.bPArpR.png

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Mar 20, 2027

Running > Half Marathon

Always Hope Easter Run DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-262321-1768465659.9349-0.bPAkt7.png

Always Hope Easter Run DENVER/AURORA

Centennial, CO

Sat - Mar 27, 2027

Run for Bagels 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270827-1768499663.1178-0.bPAsNp.png

Run for Bagels 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Apr 10, 2027

Coffee Lover Run DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-270817-1768484444.1991-0.bPAo5C.png

Coffee Lover Run DENVER/AURORA

Centennial, CO

Sat - Apr 24, 2027

Running > 1 mile, 10k, 5k, Half Marathon