Tiger Mountain Trail Run

JUN
6
2026
A trail race on Tiger Mountain State Forest near Issaquah with 5k, 12.6k, and a 13.56 mile half marathon routes. Loop courses use forest roads and singletrack with aid stations offering water, electrolyte drink, and snacks.
Sat 6 Jun 2026
14 miles 13 kilometers 5 kilometers

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Tiger Mountain Trail Run

Tiger Mountain Trail Run is a trail race held in Tiger Mountain State Forest near Issaquah, Washington. The event offers looped courses that start and finish at the trailhead on the east side of Tiger Mountain and use a variety of trails with terrain ranging from gently rolling to steep.

Distances offered:

  • 5k
  • 12.6k
  • Half Marathon (13.56 miles actual distance)

The 5k follows a single clockwise loop, out on a forest road and back on a rolling trail. The 12.6k follows much of the Half Marathon route before turning east along 5500 Road and Fully Rigid Trail to reconnect to the finish. The Half Marathon begins with a long climb on the Master Link Trail, continues on forest roads on the upper slopes, passes below the summit, then descends on mountain biking trails and returns via trails around the mountain eastern flank.

Aid stations provide water, Skratch Labs electrolyte drink, and a selection of carbohydrate or salty foods such as cookies, energy bar pieces, gels, chews, chips, bagel, fruity candy, fig bars, and peanut butter and jelly sandwiches. Runners are advised to carry a bottle or hydration bladder, especially for longer distances.

Course statistics: 5.0k - 510 feet climb and no aid stations; 12.6k - 1300 feet climb and 1 aid station; Half Marathon - 2005 feet climb and 2 aid stations.

Online pre-registration closes June 4 at 11:59 pm. Day of registration is available onsite with payment by card, cash, or check payable to Northwest Trail Runs unless the event sells out. A $10 youth discount is applied automatically for elementary, middle, and high school runners. Parking is at the Department of Natural Resources trailhead parking area about 0.3 miles along the gravel road from State Route 18 and requires a Discover Pass.

Safety and etiquette notes state that participants are responsible for their own safety, trails remain open to other users including bicyclists and equestrians, horses have the right of way, narrow trail passing etiquette applies, and headphone use should allow ambient sound or remain at low volume. Visit the organization's website for the most recent information.

14 mi
Half Marathon
13 km
12k
5 km
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