Erie Half Marathon

Part of a Colorado series that deliberately skips the Denver and Boulder metro and races in smaller Front Range towns instead. Erie has held this one every summer since 2015, and the half stays intentionally small, with recent fields under 200 finishers.

From Reliance Park the route follows the Coal Creek Trail south and west toward Erie Municipal Airport, turns around, and retraces the same path. Most of it is concrete, with a gravel trail stretch roughly between miles 4.5 and 8.5 that slows footing without adding real climbing.

Front Range mornings in August start cool, often in the 50s, then heat up quickly once the sun clears the horizon. Altitude near 5,000 feet is the bigger factor for visiting runners, and the trail offers little shade.