2026 Center of the Nation Series - Day 2 (CO)

Lace up for an unforgettable experience at the 2026 Center of the Nation Series - Day 2 (CO) on September 29, 2026, in Sterling, Colorado. Offering 10K and 5K distances, this event is a highlight of the renowned Center of the Nation Series by Mainly Marathons, celebrated for its inclusive atmosphere and dedication to runners who love to run often. Taking place in Pioneer Park, the course features a fast and flat, loose-gravel trail path, providing an excellent opportunity for personal bests.

The race distinguishes itself with a welcoming "no time limits" policy, making it ideal for runners and walkers of all paces. Early start times are even available for those who anticipate a longer finish. Runners will navigate a multi-loop course, ensuring convenient access to a generously stocked "giant aid station" after each lap, offering essentials like water, Gatorade, granola, and bananas. Participants can expect a supportive and "loony, loveable community" that embraces the joy of running together.

Beyond the race itself, all participants will receive a commemorative t-shirt, a medal, and other fun surprise goodies, with custom metal-stamped nameplates for those completing longer distances within the series. Typical race day conditions in late September in Sterling, CO, promise pleasant weather with highs around 71F and lows around 41F, accompanied by a minimal 4% chance of precipitation, creating comfortable running conditions. The event at Pioneer Park, located at 17615 Highway 14, is more than just a race; it's a chance to be part of a vibrant running community and achieve your goals on a forgiving course.