About This Race
The half marathon offers an ideal introduction to trail running or a perfect distance for those seeking a solid workout without the commitment of longer options. At 13.1 miles, this course provides enough distance to experience the character of the trails while remaining approachable for runners transitioning from road racing. The format allows for a focused effort that showcases the best of what Grand Ridge offers.
The race utilizes two distinct loops: a 5-mile loop and a longer half-marathon loop of approximately 14 miles. All distances begin at the Highpoint Way Trailhead, following the Issaquah-Preston Trail for 0.5 miles before ascending rocky, technical switchbacks to the course junction. The longer distances continue up Grand Ridge with a detour to the Flowing Fir Trail before reaching the Duthie Aid Station. Marathon runners complete two half-marathon loops, while 50K runners tackle two half-marathon loops plus the 5-mile loop. The trails remain open to other users including pedestrians and cyclists during the event.
Elevation Profile
Elevation profile estimated from terrain data. Actual course may differ.
The course gains 3,927 ft over 13 miles, with the steepest section between mile 9–mile 9.
Location
Practical Info
November conditions in the Pacific Northwest typically feature cool temperatures, high humidity, and potential rain with vibrant fall foliage.
- Refillable water container
Best For
Notable Features
This cupless race serves as the Evergreen Trail Runs series finale where series awards are distributed. The event showcases the extensive trail network built by the Washington Trails Association in the heart of the Cascade foothills, featuring the region's signature moss-covered forests and fern understories. The race acknowledges its location on Indigenous Coast Salish lands, specifically the Snoqualmie Indian Tribe territory.