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46 All Events Races Thornton, CO

Marine Memorial 5k - Arvada, CO - genericImage-websiteLogo-258638-1753215624.6833-0.bOF_ki.png

Marine Memorial 5k

Arvada, CO

Sat - Sep 20, 2025

Colorado Live RecoverED Eating Disorder Awareness Walk - Littleton, CO - genericImage-websiteLogo-233533-1720576762.3479-0.bMJER6.png

Colorado Live RecoverED Eating Disorder Awareness Walk

Littleton, CO

Sat - Sep 20, 2025

Running > 1 mile, Walking

Denver: Walk With Autism and Resource Fair - Denver, CO - genericImage-websiteLogo-246871-1738616843.82-0.bNOtal.jpg

Denver: Walk With Autism and Resource Fair

Denver, CO

Sat - Sep 20, 2025

Pioneer Prairie Dog Half Marathon, 10k & 5k - Westminster, CO - 1.2020-PDH-Series-Button-Brown.png

Pioneer Prairie Dog Half Marathon, 10k & 5k

Westminster, CO

Sat - Sep 27, 2025 @ 8:00 AM

Running > Half Marathon

Pioneer Prairie Dog Half Marathon, 10k & 5k - Westminster, CO - 1.2020-PDH-Series-Button-Brown.png

Pioneer Prairie Dog Half Marathon, 10k & 5k

Westminster, CO

Sat - Sep 27, 2025 @ 8:00 AM

Running > 10k, 5k, Half Marathon

Lisa Nelson’s Mustang Stampede 5K

Arvada, CO

Sat - Sep 27, 2025

National Singles Day: Singles & Friends Running DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-245801-1737011662.0787-0.bNIlho.png

National Singles Day: Singles & Friends Running DENVER/AURORA

Centennial, CO

Sat - Sep 27, 2025

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

Boulderthon, presented by PUMA - Boulder, CO - 2975410-300-300.jpg

Boulderthon, presented by PUMA

Boulder, CO

Sun - Sep 28, 2025 @ 7:00 AM

Running > 10k, 5k

Flyin' Ryan Memorial 5k - Greeley, CO - genericImage-websiteLogo-235029-1723086547.1053-0.bMTdBt.jpg

Flyin' Ryan Memorial 5k

Greeley, CO

Fri - Oct 03, 2025

Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $15! - Denver, CO - genericImage-websiteLogo-260670-1755623024.4477-0.bOPk5W.png

Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $15!

Denver, CO

Oct 4, 2025 - Dec 31, 2025

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

Cheers to Oktoberfest Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-250529-1742457046.6318-0.bN28Jw.png

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

Centennial, CO

Sat - Oct 04, 2025

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

SKECHERS Hot Chocolate Run - Denver - Denver, CO - 2699029_400.jpg

SKECHERS Hot Chocolate Run - Denver

Denver, CO

Sun - Oct 05, 2025 @ 7:00 AM

Running > 5k, 10k

ASDAsh 5k - Aurora, CO - genericImage-websiteLogo-261100-1756250598.8171-0.bORKhM.jpg

ASDAsh 5k

Aurora, CO

Sat - Oct 11, 2025

Cerox - Frederick, CO - genericImage-websiteLogo-262538-1757434351.5047-0.bOWfhV.png

Cerox

Frederick, CO

Sat - Oct 11, 2025

EDT XC Showdown - Aurora, CO - genericImage-websiteLogo-230799-1718909016.2845-0.bMDhHy.png

EDT XC Showdown

Aurora, CO

Sun - Oct 12, 2025

2025 DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, CO

Oct 14, 2025 - Oct 17, 2025

Boulder Turkey Trot Training Program - Boulder, CO - genericImage-websiteLogo-254055-1746736609.255-0.bOhrxH.png

Boulder Turkey Trot Training Program

Boulder, CO

Oct 15, 2025 - Nov 27, 2025

Run Against Breast Cancer 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-247268-1738761764.5926-0.bNO2yK.png

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

Centennial, CO

Sat - Oct 18, 2025

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

Fleet Feet Denver Turkey Trot Training Program - Littleton, CO - genericImage-websiteLogo-263038-1757613184.3105-0.bOWWYa.png

Fleet Feet Denver Turkey Trot Training Program

Littleton, CO

Oct 21, 2025 - Nov 27, 2025

DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, CO

Wed - Oct 22, 2025

Race to Cure Sarcoma Denver - Denver, CO - genericImage-websiteLogo-221623-1739994422.8573-0.bNTJu2.png

Race to Cure Sarcoma Denver

Denver, CO

Sat - Oct 25, 2025

Running > 1k, 5k

2025 Eerie Erie - Erie, CO - e73280cd-15c8-46b1-936f-3b2be94a8718.png

2025 Eerie Erie

Erie, CO

Sat - Oct 25, 2025

Running > 10k, 5k

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

Denver, CO

Sat - Nov 01, 2025 @ 9:00 AM

Running > 1 mile, 5k

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-250532-1742475992.3231-0.bN3bly.png

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Nov 01, 2025

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

+ Colorado Rapids Ticket - only $8! - Commerce City, CO - flag-300px.bMjMog.png

+ Colorado Rapids Ticket - only $8!

Commerce City, CO

Sat - Nov 01, 2025

Trails 5K Run/Walk - Aurora, CO - genericImage-websiteLogo-240767-1730402247.4288-0.bNi9Fh.png

Trails 5K Run/Walk

Aurora, CO

Sat - Nov 01, 2025

Mountain Madness Fall Frenzy Orienteering Trail Race - Golden, CO - genericImage-websiteLogo-255850-1749226496.5338-0.bOqXqa.png

Mountain Madness Fall Frenzy Orienteering Trail Race

Golden, CO

Sun - Nov 09, 2025

Running > Obstacle Race

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA - Centennial, CO - genericImage-websiteLogo-252628-1750143457.6696-0.bOurhH.png

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO

Sat - Nov 15, 2025

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

Colorado State Youth Cross Country Championships - Aurora, CO - genericImage-websiteLogo-259134-1753978311.5638-0.bOI5xh.png

Colorado State Youth Cross Country Championships

Aurora, CO

Sat - Nov 15, 2025

Gobble Wobble Run 2025

Littleton, CO

Thu - Nov 27, 2025