17th Lake Union 10K Run/Walk

Lace up for the 17th annual Lake Union 10K Run/Walk on Sunday, August 9, 2026, in the heart of Seattle, Washington. This popular event offers runners and walkers a unique opportunity to experience the scenic Cheshiahud Lake Union Loop Trail, a 6.2-mile course that winds around the city's vibrant urban lake. The race starts and finishes at Lake Union Park, providing a picturesque backdrop as you embark on your journey, with views of the lake and surrounding neighborhoods.

While largely considered a fast and relatively flat course, runners should be prepared for some gradual inclines, particularly around the Fremont and University Bridges, and a couple of notably steep, short hills around the 4.5-mile mark that can challenge your rhythm. Typical race day conditions in early August are pleasant, with highs around 79°F and lows around 59°F, and only a 2% chance of precipitation, creating ideal running weather. As the second-largest race in Seattle, with over 2100 annual participants, the Lake Union 10K is known for its lively community atmosphere and offers two aid stations with water and Nuun along the course to keep you hydrated.

Participants will receive a finisher's medal, and those looking to make an even greater impact can opt for the "Tees not Trees" initiative, foregoing a race shirt in favor of having a tree planted in their honor. The event proudly supports KEXP, a local music station, making your participation a stride for both personal achievement and community benefit. After crossing the finish line at Lake Union Park, celebrate your accomplishment with fellow runners, and enjoy the post-race festivities, including a French toast breakfast.