All-Out Spring Fever
When is All-Out Spring Fever?
All-Out Spring Fever takes place on Sunday, March 22, 2026 in Golden, CO.
What distances does All-Out Spring Fever offer?
All-Out Spring Fever offers 6 events: 5K, VIRTUAL 5K, 10K, VIRTUAL 10K, Half Marathon, VIRTUAL Half Marathon.
| Event | Distance | Price | |
|---|---|---|---|
| 5K | 5.0 km | $45.00 | Register |
| VIRTUAL 5K | 5.0 km | $40.00 | Register |
| 10K | 10.0 km | $55.00 | Register |
| VIRTUAL 10K | 10.0 km | $45.00 | Register |
| Half Marathon | 13.1 mi | $75.00 | Register |
| VIRTUAL Half Marathon | 13.1 mi | $55.00 | Register |
How much does All-Out Spring Fever cost?
Registration for All-Out Spring Fever starts at $25.00. Prices vary by event distance.
Where is All-Out Spring Fever held?
All-Out Spring Fever is held in Golden, CO at 19500 W 64th Pkwy.
About All-Out Spring Fever
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!
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 (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. | |
| 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) Avg. # of athletes: 115 | |
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) 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). | |
| 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) Avg. # of athletes: 166 | |
Aid Stations
Aid stations have Superganix samples on-demand and will feature Gatorade (lemon-lime, orange, or fruit punch) and Gu energy gels in raspberry lemonade
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.
Features & SWAG
| ♦ RRCA Certified Race Director—Organization you can count on! With hundreds of events under the belt of our director and a staff with 25+ years experience, your event will run smoothly. (Ha! No pun intended) |  |
| ♦ Early AND Race Day Packet Pick-Up—For those who like to prep in advance! But no worries if you wait until race day... we make it quick & easy. | |
| ♦ Race Shirts—The one you'll want to wear EVERY day! Fit specific, of course, and still poly for those moisture wicking properties, but with a touch of cotton for extreme comfiness. | |
| ♦ Finisher Medals—Custom molded for all, including the 5K! With full-color ribbons... SO fancy! | |
| ♦ Brag Tags—For all repeat finishers! Our little way of saying 'Thanks for making Spring Fever a tradition!' | |
| ♦ Souvenir Race Bibs—Event specific and personalized! Personalized for all who register at least 2 weeks in advance... yet another keepsake to remember your day! | |
| ♦ Custom Distance Sticker—Share your accomplishment! Stick 'em on your car, water bottle, or bulletin board proudly! | |
| ♦ FREE Race Pics—Unlimited downloads are on us! Professional photographers at the finish line AND on course... enjoy! | |
| ♦ Gear Check—No trips back to the car for our athletes... no need! Leave it with us... we'll keep an eye on it for you. | |
| ♦ Toilets-A-Plenty—3 Units for 500 people? What, are you crazy? Ever had to run without using a restroom because the lines were too long? Us too… ouch! Indoor flushables in the venue… thanks NAAC! Multiple units on-course for the 10K & Half! | |
| ♦ Accurately Measured Courses—Race the distance you trained for! Not a little more and not a little less... we measure each course no fewer than 3 times before race day and mark them so they're crystal clear. | |
| ♦ Use your results to qualify for Bolder Boulder—We count! All of our distances are timed and accurately measured, and may be used for the timed waves | |
| ♦ Medical Support—Nothing is more important than your safety! Here's hopin' those guys are really bored, but just in case... you'll find our med crew both at the start/finish AND on course. Plus, each and every volunteer you pass knows who to call for help. | |
| ♦ Tons of Aid Stations—No need to carry any extra weight! Not only will both water & electrolytes be handed to you at the finish line, course aid stations are an average of just 1.2 miles apart. And cups at the aid stations, no hassle of running cupless! | |
| ♦ Disposable Timing Chips—No hassle at the finish line! And no fees if you forget to return your timing chip either... we don't need it back. | |
| ♦ Electronic Results—No more endless sheets of data to sort through! All results scroll on easy-to-read computer screens in the expo area during the event and are posted online by the end of the day. | |
| ♦ Post-Race Meal—Breakfast burritos, fruit, bagels & chocolate milk for all! Yup, even if you're dead last... we're not going anywhere until we cheer you in. | |
| ♦ 3 Deep Awards—Overall AND Divisions! Events small enough to stay friendly and personal give you a better chance of landing on the podium! | |
| ♦ NEW fun, theme-based costume contest! Make sure the official photographer snaps your pic and the best theme-based outfit (as determined by the race director) gets a 50% off coupon for a future event! |
 | THANK YOU for such a well- orchestrated event today! Attention to detail, easy to navigate morning of race, friendly staff and volunteers! Blue skies and sunshine on top! ~Melissa |
 | As a part of our first-of-its-kind race that doesn't end, (yes, it goes on and on my friend), run the same distance at back-to-back events to measure your progress on identical Endless Series courses. Prizes may be awarded to those who beat their previous time! More |
 | With about a gazillion reasons why you might not be able to join us on race day, we know you still want to race with your friends & family. Well, we've got your back! More |
Prizes
We still have the great 3-deep awards that you love, overall and divisions. The prizes will be a free registration for the distance you participated in. The winners will be randomly selected and notified via email the week after the event. More
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 |