The Lake Sammamish Half Marathon takes runners along the smooth trail that connects Marymoor Park in Redmond to Lake Sammamish State Park in Issaquah. This interurban trail is very popular with runners; about 30% of the course will be on smooth gravel surface and 70% on pavement. We also offer a half-marathon walk category with a generous 4 hour time limit. This flat run is perfect for a half-marathon personal best whether you’re running or walking! 

The race is chip-timed, and each racer will receive a custom bib, participant shirt, and a finisher medal. Aid stations are provided every few miles (see course map) with Clif gels/bloks, fruit, nuun and water, and the finish line will be by the beach and includes a nice line up of food and music.


Half Marathon
March 06, 2021 (Saturday) - 07:30
13.1 miles
Cut off: 04:00 hours
Solo Certified course Flat Lakeside Road Timed


Mar 06 2021 : Light rain in the morning and afternoon.
6.5°C - 12.0°C (43.7°F - 53.6°F)

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The information about this race is based on information provided by the organisers or found on the official website of the event. Always check the official website for up-to-date information. If you have noticed any mistake, let us know at [email protected]
Last checked on 2021-04-04


Lake Sammamish Half Marathon
News Results

Results 2018: Lake Sammamish Half Marathon

Jordan Andersen grinded past more than 1383 runners to win in 01:11:17. He finished une minute 8 secondes ahead of Gabriel Kliot. Rounding out the top three was Ari Schorr with a time of 01:12:33. In the women’s race, Katherine Irgens finished first in 01:18:37 . She finished 52 secondes ahead of Ashley Nichols. Lana Lacey got the third place in
Lake Sammamish Half Marathon
Jean-Loup Fenaux | 11 Mar 2018 16:54
Lake Sammamish Half Marathon
News Results

Results: Milam, West win in Washington State

Half Marathon results Willie Milam (1:07:57) came in comfortably ahead of more than 1,700 runners to win the 7th annual Lake Sammamish Half Marathon in Redmond, Washington. Matthew Urbanski took second with a time of 1:12:49. Jacob Fure (1:13:42) finished just ahead of Jens Munk Nielsen (1:13:51) for third. First runner just finished! At the Lake Sammamish Half, representing @nuunhydration
Lake Sammamish Half Marathon
| 08 Mar 2016 16:04
From Around the web

Register now for the Lake Sammamish Half Marathon

Lake Sammamish Half Marathon | 28 Feb 2015 00:00
From Around the web

St. Mary's School raises money for From the Heart half-marathon

From the Heart Half Marathon | 25 Feb 2015 00:00
Roger Michel and Yumay Chang
Focus on a race

Lake Sammamish Half-Marathon

Roger Michel and Yumay Chang are a husband and wife team. They started doing endurance races many years ago, and slowly transitioned into also organizing events, from trail runs, mountain bike races, adventure races and duathlons. They really enjoy the organisational aspect, finding new venues for their runners, and set a relaxed atmosphere at the races. Hello, on March 26th 2011,
Lake Sammamish Half Marathon
Jean-Loup Fenaux | 17 Feb 2011 08:00




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