Colorado Marathons 2025. Welcome to the colorado marathon’s full marathon in fort collins, colorado — the ultimate challenge for runners seeking adventure, natural beauty, and an unparalleled race experience. Experience stunning views, a fast course, and four race distances.
Join us at the colorado springs marathon on saturday, october 4, 2025 whether you are a seasoned runner or looking to tackle your first 5k, we have you covered with 4 events to choose from. Join us for the colorado marathon on may 4, 2025, in fort collins!