Platte River Half-Marathon
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Platte River Half Marathon, Relay, and 5k
The Platte River event is an annual running event held in Littleton, Colorado, near the Denver metro area. The 2027 edition is scheduled for Sunday, April 11, 2027, and the race is designated as the RRCA Colorado State Half Marathon Championship for the year.
The course is an out and back along the Platte River Trail. The race begins and ends at the Reynold's Landing trailhead parking lot near Breckenridge Brewery in Littleton and passes through Littleton, Englewood, Sheridan, and Denver. The course has a total ascent of about 300 feet.
Distances and formats:
- Half Marathon 13.1 miles along the Platte River Trail.
- Relay three person teams; every team member receives a finisher medal.
- 5k new for 2026 and run along the same riverside course.
Finished runners receive event items such as a long sleeve tech T, a finisher medal, a souvenir finisher cup, and an e-goodie bag. A post race beer garden at Breckenridge Brewery features live music, food trucks, and Colorado craft beer. A portion of event proceeds is donated to Salute Colorado. The event has been produced for more than 21 years. Visit the organization's website for the most recent information.
