All-Out Spring Fever
From All-Out Multicourse Productions
- Date Sun 22nd March 2026
- Time 9:00AM MDT
- Location Golden, Colorado
- Price $27.50 - $64.60
- Races 6 races
- Distances Half Marathon, 10km, 5km
Event summary
Get ready for an exhilarating day of outdoor fun at the 13th annual All-Out Spring Fever, taking place on Sunday, March 22, 2026, in the beautiful city of Golden, Jefferson. Organized by All-Out Multicourse Productions, this event promises to be a fantastic experience for runners of all levels. Participants can choose from a variety of race distances, including a 5K, 10K, and a Half Marathon, all set against the stunning backdrop of Table Mountain and Colorado's picturesque foothills.
The race courses will take you along the serene shores of Arvada's Blunn Reservoir via the scenic Ralston Creek Trail, providing a perfect blend of challenge and natural beauty. Whether you’re a beginner looking to take on your first race or a seasoned athlete aiming for a new personal best, the All-Out Spring Fever is the perfect opportunity to enjoy a day of fitness, community, and fun. Don’t miss out on this exciting event—mark your calendars and prepare for a memorable race day!
The race courses will take you along the serene shores of Arvada's Blunn Reservoir via the scenic Ralston Creek Trail, providing a perfect blend of challenge and natural beauty. Whether you’re a beginner looking to take on your first race or a seasoned athlete aiming for a new personal best, the All-Out Spring Fever is the perfect opportunity to enjoy a day of fitness, community, and fun. Don’t miss out on this exciting event—mark your calendars and prepare for a memorable race day!
Organiser's Description
From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents our 13th annual Spring Fever from Jefferson County's NAAC Stadium easily accessible from several nearby highways. Along with its Endless Series [https://www.alloutmultipro.com/endless-series] sidekick in October, Kooky-Spooky [http://kookyspookyrun.com], these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike!
Races
-
Half Marathon
Incl. $4.60 Fee & T-Shirt
Sun 22nd March 2026 (9:00AM MDT)
$64.60
Half marathon athletes will depart the east end of the NAAC parking lot then run along the sidewalk on the south side of W 64th Pkwy to reach the 2nd underpass and the path that runs adjacent to the west side of Virgil Wy. Turning right to go east on Ralston Creek Trail, half athletes will complete a 7 mile out & back dogleg before rejoining the counter-clockwise Blunn Reservoir loop. Going under the underpass at the reservoir entrance, athletes will make their way back up onto the 64th sidewalk then return the way they came to the finish line. 8 opportunities to fuel up (+ 3 toilets). -
10k
Incl. $3.40 Fee & T-Shirt
Sun 22nd March 2026 (9:30AM MDT)
$43.40
10K athletes will depart the east end of the NAAC parking lot then run along the sidewalk on the south side of W 64th Pkwy to reach the east underpass and the path that runs adjacent to the west side of Virgil Wy. Athletes will continue north until just past Tucker Lake, then west and south, following Ralston Creek Trail around Blunn Reservoir going under the west underpass to return they way they came into NAAC and the finish line. 3 opportunities to fuel up (+1 toilet). -
5k
Incl. $2.80 Fee & T-Shirt
Sun 22nd March 2026 (9:40AM MDT)
$32.80
5K athletes will depart the east end of the NAAC parking lot then run the sidewalk on the south side of W 64th Pkwy to reach the underpass and Ralston Creek Trail. Running northwest, with Blunn Reservoir on their right, athletes will turn around and return on this out & back course. 2 opportunities to fuel up. -
VIRTUAL Half Marathon
Incl. $3.40 Fee & T-Shirt
$43.40
Participate virtually! Get all of the SWAG, including a distance medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship! -
Virtual 10k
Incl. $2.80 Fee & T-Shirt
$32.80
Participate virtually! Get all of the SWAG, including a distance medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship! -
Virtual 5k
Incl. $2.50 Fee & T-Shirt
$27.50
Participate virtually! Get all of the SWAG, including a distance medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship!
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19500 W 64th Pkwy, Golden, 80403, CO, United States
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All-Out Spring Fever
