Sunday, April 11, 2027 · 5K · Half Marathon · Littleton, CO
Platte River Half-Marathon, Relay & 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…
Start line: 6745 S. Santa Fe Dr.
30 weeks to race day — get a training plan
A week-by-week plan scaled to Sunday, April 11, 2027, built around the Denver–Boulder run clubs on your training days — shareable by URL, no account needed.
Build my plan →Train for it with a crew
A 5K is twelve weeks of Saturdays away, even from the couch. Run clubs in Denver–Boulder →
Frequently asked
- When is the Platte River Half-Marathon, Relay & 5k?
- The next Platte River Half-Marathon, Relay & 5k is Sunday, April 11, 2027 in Littleton, CO.
- Where does the Platte River Half-Marathon, Relay & 5k start?
- The Platte River Half-Marathon, Relay & 5k starts at 6745 S. Santa Fe Dr. in Littleton, CO.
- What distances does the Platte River Half-Marathon, Relay & 5k offer?
- The Platte River Half-Marathon, Relay & 5k offers Half Marathon and 5K.
- How do I register for the Platte River Half-Marathon, Relay & 5k?
- You can register for the Platte River Half-Marathon, Relay & 5k on RunSignup. Use the Register link above; RunVibe does not sell registrations directly.
Listed on RunSignup. Race details are the organiser’s — confirm the date and start time with them before you travel.