Embark on a quintessential Pacific Northwest trail running adventure at the Tiger Mountain Trail Run on June 6, 2026, in Issaquah, WA. Known as the "crown jewel of the Issaquah Alps," Tiger Mountain State Forest offers runners a choice of 13.1M, 12K, and 5K distances, each providing a unique tour through this magnificent landscape. The courses, starting and finishing from the trailhead on the east side of Tiger Mountain, are celebrated for their fantastic and well-marked loop designs, navigating a diverse array of terrain from gently rolling paths to steep ascents. Prepare for challenging elevation gains, including a significant climb on the newly-built Master Link Trail for half marathoners, leading to stunning forest views and glimpses of distant peaks like Mount Rainier on clear days.

Runners consistently praise this event for its well-supported atmosphere and the sheer beauty of its courses, which wind through lush deciduous, coniferous, and mixed forests, past active logging areas, and through moist areas rich with ferns and small creeks. While the 5K offers a single clockwise loop with 510 feet of climb, the 12K tackles 1300 feet of elevation, and the half marathon features a formidable 2005 feet of gain over its 13.56-mile route. Aid stations are well-stocked for longer distances, with one station for the 12K and two for the half marathon, though 5K runners will find no on-course support. Carrying a hydration bladder or bottle is recommended for all participants, especially on the longer routes.

The Tiger Mountain Trail Run, organized by Northwest Trail Runs, has earned its reputation as a favorite playground for Seattle-area trail enthusiasts. Race day conditions typically feature pleasant early June weather, with highs around 70°F and lows around 53°F, and only a 7% chance of precipitation. The start and finish are conveniently located at the Department of Natural Resources trailhead parking area; however, a Discover Pass is required for parking on DNR lands. This event also proudly supports the PNW Youth Trail Project, with the 5K distance being part of this competitive series.