All-Out Spring Fever

Sun March 19, 2023 Golden, CO 80403 US
Course details

Jefferson County's NAAC Stadium
19500 W 64th Pkwy, Golden, CO 80403

Wheelchair/Stroller Access: All are welcome, but there is one short unpaved section of the course you should consider before registering. 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.
Male record: Collin Knaub, 2018 Spring Fever 17:13 (5:33)
Female record: Ashley Brasovan, 2015 Kooky-Spooky 18:03 (5:49)
Course average: 37:41 (12:09)

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).
Male record: Eitan Halper-Stromberg, 2015 Kooky-Spooky 35:58 (5:48)
Female record: Linnabah Snyder, 2014 Spring Fever 39:51 (6:26)
Course average: 1:06:11 (10:40)

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 utilize 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).
Male record: Ben Zywicki, 2013 Kooky-Spooky 1:11:36 (5:28)
Female record:
Bean Wrenn, 2015 Spring Fever 1:23:06 (6:21)
Course average: 2:14:20 (10:15)

Aid Stations

Directions & Parking

Directions: Jefferson County's NAAC stadium is located at 19500 W 64th Pkwy in Golden, CO, which is the southeast corner of 64th & Hwy 93. From I70, you'd go north on Ward Rd, then west on 64th for about 4.5 miles to find the stadium entrance on the south side of the street. Click here for a map or to get directions.

Parking: Athletes & spectators will be required to enter via the west entrance and park in the areas shown with purple cars on the site map, keeping the lot closest to the start/finish area available for volunteers, course vehicles and other event traffic. Please follow all parking signs & staff direction on race day.

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