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Platte River Half-Marathon and Relay

Name: Platte River Half-Marathon and Relay
Start: 2026-04-12
End: 2026-04-12
Location: Littleton, Colorado

location_city Littleton

location_on Colorado

flag United States

calendar_today 12 Apr, 2026

directions_run Running

language Official Website

About the Event

Welcome to the Platte River Half Marathon & Relay race, one of the most exciting and popular races in the Denver Metro Area! This race is held annually in Littleton, CO. We’re thrilled to announce that registration for our upcoming 2026 event on Sunday, April 12th is open for the half-marathon and relay race. The race starts and finishes next to the beautiful Platte River Trail and adjacent to the popular Breckenridge Brewery campus. Join us for an epic post-race party at the Brewery with food, vendors, live music, and of course beer!

Whether you’re an experienced runner looking to set a new PR, a newcomer looking to tackle your first half-marathon, or a team of runners wanting to run an exciting relay race, join us for a day of adrenaline-pumping running, scenic views, and all-around fun. What’s more, we donate a portion of the proceeds to the Leukemia & Lymphoma Society. Thank you for your support, and we can’t wait to see you at the finish line!

Questions? Visit our race website here.

Entry fees are non-refundable and non-transferable. There are no deferrals to future years.

Races Offered

5K

Apr 12, 2026

straighten

Distance — 5K

terrain

Type — Road running

timer

102 days remaining

Half-Marathon

Apr 12, 2026

straighten

Distance — Half-Marathon

terrain

Type — Road running

timer

102 days remaining

Weather Overview

These values represent the 3-year monthly averages for April in Littleton.

Temp (°C)

Feels Like (°C)

thermostat 1.2° / 18.6°

wb_sunny -3.4° / 13.3°

Wind (km/h)

Humidity (%)

air 11.0 /

water_drop 43.8%