All-Out Fall Fest
All-Out Fall Fest is a 5K and 10K and Half Marathon race in Denver–Boulder, CO, held on Sat, Sep 19, 2026 at 10170 Church Ranch Way , with entry from $35. All-Out Fall Fest takes place on September 19, 2026 in Westminster, CO, with 5K, 10K, half marathon on the schedule. Full details and registration are on the organizer's page.
| Date | Sat, Sep 19, 2026 |
| Distances | 5K, 10K, Half Marathon |
| Venue | 10170 Church Ranch Way |
| Address | 10170 Church Ranch Way, Westminster, CO |
| Entry | From $35 |
| Registration | Register for All-Out Fall Fest |
Map location is approximate — confirm the start line with the organizer.
Listing updated Sun, Jul 26, 2026. Organize this race? Submit an update. Listing details via the organizer's page.
Racing Denver–Boulder? Get the drop.
Races like All-Out Fall Fest sell out — get new Denver–Boulder races twice a month plus price-jump warnings.
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