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Lake Sammamish Half Marathon

Lake Sammamish Half Marathon

2020 Update

We have fought long and hard to put on an in-person race this year for the Lake Sammamish Half. With the latest announcement from Governor Inslee taking the state back on their phases we are not going to be able to hold the 2020 Lake Sammamish Half as planned.

This year we will be celebrating the 2020 Lake Sammamish Half VIRTUALLY!

Through this difficult time we are happy that we can offer a virtual race, to keep spirits up, and people healthy. We know many runners set goals with this race, and we are excited to continue to support your running goals virtually this year.

We will be mailing out packets over the next few weeks, and all preregistered runners will be receiving an email in the next few days with instructions.

We know many of you will have additional questions. Please wait until you receive your email before emailing. As you can imagine, we receive many emails daily and will do our best to get back to everyone but it does take some time.

We will also be announcing some new and exciting news regarding the 2021 season in the next couple of weeks. Please keep your eye out for a newsletter.

Thank you all for your support over the years. We look forward to a great virtual race this year and an exciting racing season for 2021!


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! For more information See Ahotu Marathons’ and Sammamish Patch’s articles about the run and check out the Lake Sammamish Half Facebook Page for the latest updates.

The race is chip-timed, and each racer will receive a custom bib, a finisher medal, a long-sleeve microfiber Tech Shirt and sponsor products. 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.

Nonprofit partners

This event benefits Cascade Leadership Challenge, a nonprofit organization dedicated to providing leadership and outdoor adventure opportunities to local youth ages 14-20.

We also supportĀ Hopelink and Attain Housing, local organizations dedicated to helping local homeless and low-income families.

In addition to this run, we also organize the Lake Washington Half Marathon.

Photo Credit: Jessica Gobler

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