Grand Teton Half Marathon & 5K

The Grand Teton Half Marathon & 5K and the Yellowstone Half Marathon & 5K will take place on back-to-back weekends in June of 2025 and we can't wait to see all of you out there. Whether you're joining us for a 5K, determined to do a double, or planning to hang all EIGHT medals around your neck after completing the Grand Quad (yes, we said eight), we're here to pump you up along the way and cheer you on as you cross the finish line(s)! Race Dates: June 6, 2025 - Grand Teton 5K June 7, 2025 - Grand Teton Half Marathon June 13, 2025 - Yellowstone 5K June 14, 2025 - Yellowstone Half Marathon