All-Out Spring Fever
All-Out Spring Fever is a 5K and 10K and Half Marathon race in Denver–Boulder, CO, held on Sun, Mar 21, 2027 at 19500 W 64th Pkwy , with entry from $35. All-Out Spring Fever takes place on March 21, 2027 in Golden, CO, with 5K, 10K, half marathon on the schedule. Full details and registration are on the organizer's page.
| Date | Sun, Mar 21, 2027 |
| Distances | 5K, 10K, Half Marathon |
| Venue | 19500 W 64th Pkwy |
| Address | 19500 W 64th Pkwy, Golden, CO |
| Entry | From $35 |
| Registration | Register for All-Out Spring Fever |
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 Spring Fever sell out — get new Denver–Boulder races twice a month plus price-jump warnings.
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