All-Out Spring Fever
- Date
- March 21, 2027
- Location
- 19500 W 64th Pkwy, Golden, CO
- Distance
- Half Marathon · 10K · 5K & more
From the Organizer
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 our NEW charity, People and Pollinators Action Network (we really love the bees). And don't miss that you can use Spring Fever to qualify for your BOLDERBoulder wave!
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More running races in CO
AdventHealth Race to Rebuild
Sloth Run 5K/10K/13.1 DENVER/AURORA
Half Marathon · 10K · 5K
Barr Trail Mountain Race
Eat. Run. Adopt. 10K
10K
Frequently Asked Questions (FAQs)
- What is the All-Out Spring Fever?
- All-Out Spring Fever is a running event held in Golden, CO. Learn more about the different endurance sports here.
- When and where is the All-Out Spring Fever?
- Sunday, March 21, 2027 in Golden, CO at 19500 W 64th Pkwy, Golden, CO. Check the official event page for exact start times and wave schedules.
- How do I register for the All-Out Spring Fever?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
All-Out Spring Fever
Mar 21, 2027