Platte River Half-Marathon
Always double-check with the organizer's website! This page may contain affiliate links.
Platte River Half-Marathon and Relay
The Platte River Half-Marathon and Relay is an annual running event held in Littleton, Colorado. The 2026 edition is designated as the RRCA Colorado State Half Marathon Championship and offers multiple race options on the same riverside course.
- 13.1 miles Half Marathon
- Half Marathon Relay with three person teams
- 5k same riverside course, new for 2026
The course follows the Platte River Trail in an out and back format and records a total ascent of 300 feet. The route passes through Littleton, Englewood, Sheridan, and Denver and begins and ends near the Reynold's Landing trailhead parking lot adjacent to Breckenridge Brewery.
After the finish there is a post race party at Breckenridge Brewery with live music, food trucks, and Colorado craft beer. Registered finishers receive event items that typically include a long sleeve tech T, a finisher's medal, a souvenir finisher cup, and an e goodie bag.
The event is held annually in Littleton. Entry fees are non refundable and non transferable and there are no deferrals to future years. Visit the organization's website for the most recent information.
