All-Out Spring Fever

MAR
21
2027
Spring Fever in Golden, Colorado offers in-person 5K, 10K and half marathon courses along Ralston Creek Trail and Blunn Reservoir, plus virtual options with shipped swag and series credit.
Sun 21 Mar 2027
13 miles 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

All-Out Spring Fever

All-Out Multicourse stages the 15th Annual Spring Fever on 03/21/2027 at 19500 W 64th Pkwy, Golden, Colorado. The event takes place near Table Mountain and the Colorado foothills and is accessible from nearby highways. It benefits People and Pollinators Action Network and features the event mascot Buzzby.

Available distances

  • Half Marathon 13.1 Miles
  • 10K
  • 5K
  • Virtual Half, 10K, and 5K

Course and on-course services are described by distance. The half marathon starts at the NAAC parking lot, runs east along the W 64th Pkwy sidewalk, north beside Virgil Way, includes a 7-mile out-and-back on the Ralston Creek Trail, and finishes after a counter-clockwise loop around Blunn Reservoir. There are eight aid stations and three toilets on the half marathon route.

The 10K also starts at the NAAC parking lot, follows the south-side sidewalk of W 64th Pkwy and the path beside Virgil Way, then completes a counter-clockwise loop around Blunn Reservoir. That route includes three aid stations and one toilet.

The 5K begins at the NAAC parking lot, goes east to the first underpass and onto the Ralston Creek Trail, runs northwest with Blunn Reservoir on the right, turns at 1.55 miles, and returns on the same out-and-back course. Two fueling opportunities are provided.

Virtual entries receive event swag and a distance medal shipped the week after the event, remain eligible for series finisher awards and alumni brag tags, and receive distance and modified placement credit toward the Run Amok Championship. Visit the organization's website for the most recent information.

13 mi
Half Marathon
10 km
10k
5 km
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.