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All-Out Spring Fever

Name: All-Out Spring Fever
Start: 2026-03-22
End: 2026-03-22
Location: Golden, Colorado

location_city Golden

location_on Colorado

flag United States

calendar_today 22 Mar, 2026

directions_run Running

language Official Website

About the Event

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!

Races Offered

Half Marathon

Mar 22, 2026

straighten

Distance — 13.1 Miles

terrain

Type — Road running

timer

09:00

VIRTUAL 10K

Mar 22, 2026

straighten

Distance — 10K

terrain

Type — Road running

timer

09:00

VIRTUAL 5K

Mar 22, 2026

straighten

Distance — 5K

terrain

Type — Road running

timer

09:00

VIRTUAL Half Marathon

Mar 22, 2026

straighten

Distance — 13.1 Miles

terrain

Type — Road running

timer

09:00

10K

Mar 22, 2026

straighten

Distance — 10K

terrain

Type — Road running

timer

09:30

5K

Mar 22, 2026

straighten

Distance — 5K

terrain

Type — Road running

timer

09:40

Weather Overview

These values represent the 3-year monthly averages for March in Golden.

Temp (°C)

Feels Like (°C)

thermostat -4.9° / 10.0°

wb_sunny -9.8° / 5.7°

Wind (km/h)

Humidity (%)

air 9.4 /

water_drop 56.6%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat -4.9° / 10.0°

wb_sunny -9.8° / 5.7°

air 9.4 km/h

water_drop 56.6%

About Golden

Golden is a city in the Denver Area of Colorado. It sits at the foothills of the Rocky Mountains, and distance-wise is roughly halfway between the cities of Boulder and Denver. It is the home of the Coors Brewery, the Colorado School of Mines, and the Colorado Railroad Museum.