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Platte River Half-Marathon, Relay & 5k

Littleton, Colorado, United States
Updated May 23, 2026

Platte River Half-Marathon, Relay & 5k is listed for April 11, 2027 in Littleton, Colorado, United States. Listed distances: Half Marathon, 5K, Relay. Confirm the date, registration and travel details with the official organizer before you book.

Date
April 11, 2027
Distances
Half Marathon, 5K, Relay
Location
Littleton, Colorado, United States
Surface
Trail

About this race

RunSignup listed events: Half Marathon - running_race - 13.1 Miles; Half Marathon Relay - running_race - 13.1 Miles; 5k - running_race - 5K. Welcome to the Platte River Half Marathon, Relay & 5k 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 2027 event on Sunday, April 11th is open for the half-marathon and relay race. The race starts and...

Key facts

Date
April 11, 2027
Location
Littleton, Colorado, United States
Events
Half Marathon, 5K, Relay
Surface
Trail
Official source
Registration page & official site
Listing status
updated May 23, 2026

Before you register

  • 1
    Confirm the race-day schedule

    Verify the April 11, 2027 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.

  • 2
    Pin the exact start area

    Use Colorado as the planning region, then confirm the precise start, finish, parking and transport with the organizer.

  • 3
    Pick your distance

    Listed options are Half Marathon, 5K, Relay. Check the source for current per-distance availability and limits.

  • 4
    Review entry terms

    Read entry rules, refund terms, participant limits and transfer rules before you pay.