MCRRC Seneca Creek Greenway Trail Marathon & 50K

Lace up for an unforgettable adventure at the MCRRC Seneca Creek Greenway Trail Marathon & 50K, set to challenge and inspire runners on Saturday, March 7, 2026, in scenic Gaithersburg, MD. This annual event is renowned for its immersive trail experience through the natural beauty of Seneca Creek State Park. Runners can choose their ultimate challenge on race day, with the option to complete either the roughly 28-mile marathon distance or push further for the 50K, making the final decision around mile 27.7 of the course.

The course itself is a true trail runner's delight, winding along single-track dirt paths characterized by rolling hills and a total elevation gain for the 50K of approximately 2200 feet (671 meters). Expect a dynamic mix of terrain, including muddy, rocky, and rooty sections, along with occasional creek crossings that add to the authentic trail ultra feel. While there are no overwhelming climbs, the constant "ups and downs" and some steep sections promise to keep your heart pumping and test your endurance. The start and finish lines are conveniently located at the Nuthatch Pavilion within Seneca Creek State Park.

Participants consistently praise this event for its supportive atmosphere and dedicated volunteers. Aid stations, strategically placed every 5 to 8 miles, will be stocked with water, Gatorade, and snacks, ensuring you stay fueled and hydrated. A drop bag service is also available at the Berryville Road Aid Station. Typical race day conditions in early March see highs around 49F and lows around 32F, with a modest 12% chance of precipitation, offering crisp and invigorating running weather. Every finisher will be rewarded with a custom race bib, a stylish short-sleeved tech shirt, and a well-deserved medal to commemorate their achievement on these challenging yet picturesque trails.