Brooks Lake Sammamish Half Marathon presented by REI 2027

The Brooks Lake Sammamish Half Marathon presented by REI runs point-to-point from Redmond to Sammamish on a paved route alongside Lake Sammamish. It follows the East Lake Sammamish Trail, offering a flat, fast 13.1-mile run or walk between two Eastside communities. The course is USATF-certified with chip timing for accurate results. The event includes a half-marathon walk category with a four-hour limit and a virtual half marathon limited to 30 participants. Aid stations are positioned every few miles. The race is cupless; participants should bring a bottle or hydration pack, or use a reusable cup. Finishers get a timed bib, shirt, and medal.