Brooks Lake Sammamish Half Marathon presented by REI

Get ready to chase your next personal best at the Brooks Lake Sammamish Half Marathon presented by REI, taking place on March 7, 2026, in Redmond, WA. This highly-regarded 13.1-mile event, known for its flat and fast course, offers a prime opportunity for runners and walkers alike to achieve their goals. The scenic point-to-point race guides participants along a smooth, fully paved interurban trail, connecting Marymoor Park in Redmond to the picturesque Lake Sammamish State Park in Issaquah. With only gentle rises and approximately 150 feet of elevation gain, the route is designed for speed and features beautiful views as you travel beside the shores of Lake Sammamish. Typical race day conditions in early March offer invigorating highs around 52°F and lows around 38°F, with a modest 18% chance of precipitation, creating a comfortable running environment.

The Brooks Lake Sammamish Half Marathon, a beloved event since 2010 and now directed by Orca Running, ensures a well-supported and memorable experience. Aid stations are strategically placed every 2-3 miles, offering essential hydration with water and Nuun (or Tailwind Endurance Fuel), along with energy boosts from Clif gels (or GU gels). Embrace the event's commitment to sustainability by bringing your own hydration vessel, as it's a cupless race, though reusable cups are available at the start. Your journey begins at Redmond's City Hall and culminates with a lively finish line celebration by the beach at Lake Sammamish State Park, complete with music and post-race refreshments.

Participants receive a chip-timed race experience, a custom bib, a stylish Brooks Podium tech shirt, and a well-deserved finisher medal. Pacers are available to help you hit your target time, and a generous 4-hour time limit accommodates both runners and those participating in the half-marathon walk category. To enhance convenience, complimentary shuttles transport participants from the finish line back to the start area. This event consistently earns positive reviews for its organization and atmosphere, making it a must-do for anyone seeking a rewarding half marathon on the Pacific Northwest racing calendar.