This wiki page provides a listing of marathons and/or half-marathons in Colorado. When a race logo is provided, click on the picture to go to the official website. Comments about these races are at the bottom of the wiki page, if posted.
- Rim Rock Marathon
- Location: Grand Junction, Colorado
- Distance(s): Marathon
- Rock ‘n’ Roll Denver Marathon & 1/2
- Location: Denver, Colorado
- Distance(s): Marathon, Half-Marathon
- ZOOMA Colorado Half-Marathon
- Location: Colorado Springs, Colorado
- Distance(s): Half-Marathon
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