Golden, CO | Sunday, March 21, 2027Registration OpenCharity / Cause
All-Out Multicourse is proud to host our 15th Annual Spring Fever, a rewarding event for both novice and experienced athletes set against the backdrop of Table Mountain and the stunning Colorado foothills. This spring celebration, featuring our mascot Buzzby, includes 5K, 10K, and half marathon courses that trace the scenic shores of Arvada's Blunn Reservoir via the Ralston Creek Trail. Conveniently accessible from nearby highways, Spring Fever is the endless series spring counterpart to Kooky-Spooky, and proudly benefits our NEW charity, People and Pollinators Action Network (we really love the bees). And don't miss that you can use Spring Fever to qualify for your BOLDERBoulder wave!
Available Distances
Awards & Prizes
Participant Giveaway
13.1 Miles: T-Shirt
10K: T-Shirt
5K: T-Shirt
Registration & Pricing
Distance
Price
Opens
Closes
13.1 Miles
$65.00
Mar 22
Sep 22
$70.00
Sep 22
Dec 22
$80.00
Dec 22
Mar 8
$85.00
Mar 8
Mar 21
10K
$45.00
Mar 22
Sep 22
$50.00
Sep 22
Dec 22
$60.00
Dec 22
Past Results
10K
Year
Finishers
Median Time
Fastest Time
2026
172
1:05:59
34:28
2025
157
1:08:23
36:22
2024
112
1:06:09
41:43
5K
Year
Finishers
Median Time
Fastest Time
2026
216
36:58
20:12
2025
131
36:40
20:30
2024
Interested in this race?
Mar 8
$65.00
Mar 8
Mar 21
5K
$35.00
Mar 22
Sep 22
$40.00
Sep 22
Dec 22
$50.00
Dec 22
Mar 8
$55.00
Mar 8
Mar 21
Schedule
Saturday, March 22 12:30-3:30p Early packet pick-up & walk-up registration Location: TBD Sunday, March 23 8:00a Packet pick-up and registration open 8:50a Half marathon pick-up/registration close 9:00a Half marathon start 9:20a 10K pick-up/registration close 9:30a 10K start 9:30a 5K pick-up/registration close 9:40a 5K start 10:30a 5K awards ceremony 11:00a 10K/Half overall awards ceremony 11:30a Half marathon division awards ceremony Note that packet pickup closes 10 minutes before the start