All-Out Spring Fever

All-Out Spring Fever
Date Mar 2025 (TBD)
Distance 5k, 10k, Half-marathon
Course Type Trail

Race Information

All-Out Multisport presents the annual Spring Fever from Jefferson County’s NAAC Stadium. Easily accessible from Hwy 93, 6th Ave, Hwy 58 or I-70, these 5K, 10K & Half Marathon run courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike.

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Related Events

Did you know that this race is part of a series of runs? If you like this race you may want to run one of the following All-Out Multicourse Productions events.

Run Pick of the Month - Slacker Half Marathon

 Over 2,000 feet of descent at this downhill half marathon happening June 22, 2024.

Slacker Half Marthon runners follow an exhilarating point to point course from the base of Loveland Ski Area (10,630 ft) to the post-race party in historic Georgetown (8,400 ft).

Participants will receive a Long Sleeve Tech Shirt, a Finisher Medal, and the joy of indulging in one free beer (non-alcoholic option available).

One addition that we really like is that they offer free downloadable race photos.

Get Slacker Half Info

Pace Calculator

Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.

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