Platte River Half-Marathon
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Platte River Half Marathon & Relay : event overview
The Platte River Half Marathon & Relay is an annual road/trail event held in Littleton, Colorado. The event is scheduled for Sunday, April 12, 2026, and has been designated the 2025 RRCA Colorado State Half Marathon Championship. The race starts and finishes at the Platte River Trail adjacent to the Breckenridge Brewery campus and the Reynolds Landing trailhead parking area. A portion of event proceeds is donated to the Leukemia & Lymphoma Society.
Course, distances and event features
The course is an out-and-back route along the Platte River Trail with a total ascent of about 300 feet. It passes through Littleton, Englewood, Sheridan, and Denver. Race offerings and participant items include:
- Half Marathon - 13.1 miles
- Half Marathon Relay - three-person teams
All finishers receive a long-sleeve tech T, a finisher’s medal, a souvenir finisher’s cup, and an e-goodie bag. The post-race area at Breckenridge Brewery is described as a family-friendly party with live music, food trucks, Colorado craft beer, and hard seltzer. The listed event location is 6745 S. Santa Fe Dr., Littleton, CO 80120. Visit the organization's website for the most recent information.