Platte River Half-Marathon
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Platte River Half Marathon & Relay
The Platte River Half Marathon, Relay, and 5k is an annual running event held in Littleton, just outside Denver, Colorado. The event is scheduled for Sunday, April 11, 2027, and has been designated the RRCA Colorado State Half Marathon Championship. A portion of race proceeds is donated to Salute Colorado.
The course is an out and back route along the Platte River Trail that begins and ends at the Reynold's Landing trailhead parking lot near Breckenridge Brewery. The route passes through Littleton, Englewood, Sheridan, and Denver and has approximately 300 feet of total ascent. After the race there is a celebration at Breckenridge Brewery featuring live music, food trucks, and Colorado craft beer; the gathering is described as family friendly.
Race offerings and finisher items include:
- Half Marathon (13.1 miles)
- Relay (teams; three-person teams noted elsewhere)
- 5k (new for 2026)
All finishers receive event apparel and keepsakes such as a long-sleeve tech T, a finisher’s medal, a souvenir finisher’s cup, and an e-goodie bag. Visit the organization's website for the most recent information.
