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All-Out Spring Fever

5K 10K Half Marathon

What’s Happening?

All-Out Multicourse is proud to host our 15th Annual Spring Fever, a rewarding event for both novice and experienced athletes set against the backdrop of Table Mountain and the stunning Colorado foothills. This spring celebration, featuring our mascot Buzzby, includes 5K, 10K, and half marathon courses that trace the scenic shores of Arvada's Blunn Reservoir via the Ralston Creek Trail. Conveniently accessible from nearby highways , Spring Fever is the endless series spring counterpart to Kooky-Spooky, and proudly benefits People and Pollinators Action Network. And don't miss that you can use Spring Fever to qualify for your BOLDERBoulder wave!

This family- and dog-friendly event includes:

The flexibility of running or walking 5K, 10K, or half marathon distances to meet your fitness goals and so you can participate with your friends and family
An awesome, super-soft tech running shirt, full-color commemorative 15th annual medal, and event-specific bib for all distances
Chip timing and accurately measured courses
Awesome post-race meal including breakfast burrito and chocolate milk
Huge amount of parking
Lots of free course and finish line photos

We are inclusive and support athletes of all abilities, including no time limit on the run/walk

Save 25% by registering for all three All-Out winter events at the same time!

 

All-Out Multicourse is proud to host our 15th Annual Spring Fever, a rewarding event for both novice and experienced athletes set against the backdrop of Table Mountain and the stunning Colorado foothills. This spring celebration, featuring our mascot Buzzby, includes 5K, 10K, and half marathon courses that trace the scenic shores of Arvada's Blunn Reservoir via the Ralston Creek Trail. Conveniently accessible from nearby highways , Spring Fever is the endless series spring counterpart to Kooky-Spooky, and proudly benefits People and Pollinators Action Network. And don't miss that you can use Spring Fever to qualify for your BOLDERBoulder wave!

This family- and dog-friendly event includes:

The flexibility of running or walking 5K, 10K, or half marathon distances to meet your fitness goals and so you can participate with your friends and family
An awesome, super-soft tech running shirt, full-color commemorative 15th annual medal, and event-specific bib for all distances
Chip timing and accurately measured courses
Awesome post-race meal including breakfast burrito and chocolate milk
Huge amount of parking
Lots of free course and finish line photos

We are inclusive and support athletes of all abilities, including no time limit on the run/walk

Save 25% by registering for all three All-Out winter events at the same time!

 

More about All-Out Multicourse Productions
Endurance event company providing 5K, 10K, and half marathon events in the Denver area
When & Where
Mar 21, 2027, 9:00am to 1:00pm Timezone: MDT
$43.40


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