Lake Sammamish Half Marathon
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Event details
The Lake Sammamish Half Marathon takes place on Saturday, March 7, 2026, in Redmond, Washington. The event includes the following distances:
- Half Marathon
- Virtual Half Marathon
The in-person half marathon is open to ages 10 and older. The virtual event is limited to 40 spots; virtual participants receive a shirt and medal that are mailed after the in-person race. Registration fees listed on the event page are $78 for the half marathon and $52 for the virtual half. Additional fees may include a carbon offset of $0.95, a King County parks surcharge of 5%, and a tariff fee of $3.50.
Course and logistics
The race is a point-to-point half marathon that follows a fully paved interurban trail between Marymoor Park in Redmond and Lake Sammamish State Park in Issaquah. The course is described as flat and includes a half-marathon walk category with a four hour time limit. The event is chip-timed. Participants receive a custom bib, a participant shirt, and a finisher medal. Aid stations are located every few miles and offer Clif gels, Nuun, and water. The finish area is at the beach and includes on-site food and music. The race is cupless; participants should bring a handheld bottle, wear a hydration pack, or use a reusable cup provided at the start. Visit the organization's website for the most recent information.