Platte River Half-Marathon
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Event overview
The Platte River Half Marathon & Relay is an annual road and trail event held in Littleton, Colorado. The race is scheduled for April 12, 2026, and is designated as the 2025 RRCA Colorado State Half Marathon Championship. Distances offered:
- Half Marathon - 13.1 miles
- Half Marathon Relay - three-person team
Entry fees are non-refundable and non-transferable. There are no deferrals to future years.
Course, race features, and logistics
The course is an out-and-back along the Platte River Trail, beginning and ending near the Reynolds Landing trailhead parking lot adjacent to the Breckenridge Brewery campus. The route passes through Littleton, Englewood, Sheridan, and Denver and has a total ascent of about 300 feet. Post-race activities take place at Breckenridge Brewery and include live music, food trucks, vendors, and Colorado craft beer and hard seltzer. All three members of a relay team receive a finisher’s medal. Finishers also receive race items such as a long-sleeve tech T, a finisher’s medal, a souvenir finisher’s cup, and an e-goodie bag. A portion of race proceeds is donated to the Leukemia & Lymphoma Society. The event location is listed as 6745 S. Santa Fe Dr., Littleton, CO 80120. Visit the organization's website for the most recent information.
