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 sidekick in October, Kooky-Spooky, 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!
Wheelchair/Stroller Access: All are welcome, but there is one short (300′) unpaved, gravel soft surface section of the course you should consider before registering. Race chairs and strollers will be fine, traditional chairs and strollers may have difficulty with the terrain. Please contact us for more information.
5K course
(4% soft surface/14% asphalt/82% concrete) Download/elevation profile
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.
Course average: 37:41 (12:09)
Avg. # of athletes: 115
All-Out Spring Fever
March 23, 2025
Golden
Road
Ready to sign up?
1-100
Fast & Flat
Urban
High: 50°
/ Low: 34°
10K course (1% soft surface/13% concrete with adjacent soft surface/79% concrete/7% asphalt) Download/elevation profile 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). Course average: 1:06:11 (10:40) Avg. # of athletes: 106 Half marathon course (<1% soft surface/6% concrete with adjacent soft surface/90% concrete/4% asphalt) Download/elevation profile 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)
Overview
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 sidekick in October, Kooky-Spooky, 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!
Wheelchair/Stroller Access: All are welcome, but there is one short (300′) unpaved, gravel soft surface section of the course you should consider before registering. Race chairs and strollers will be fine, traditional chairs and strollers may have difficulty with the terrain. Please contact us for more information.
5K course
(4% soft surface/14% asphalt/82% concrete) Download/elevation profile
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.
Course average: 37:41 (12:09)
Avg. # of athletes: 115
Course Description
10K course (1% soft surface/13% concrete with adjacent soft surface/79% concrete/7% asphalt) Download/elevation profile 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). Course average: 1:06:11 (10:40) Avg. # of athletes: 106 Half marathon course (<1% soft surface/6% concrete with adjacent soft surface/90% concrete/4% asphalt) Download/elevation profile 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)
