The Iverson Railroad Grade Trail, located within Tiger Mountain State Forest, is popular with mountain bikers. The rolling trail is considered challenging and often gets muddy. Mountain bikers recommend riding the trail from the top down because the difficult climb in the lower segment.
Other trails in the area include the Northwest Timber Trail
and the Preston Railroad Trail
Often the trails are closed between October 15 and April 15. Check with Tiger Mountain State Forest for details.
From Seattle take I-90 East to State Route 18 and head south for 4.4 miles to East Tiger Summit (on the right). There are two main parking areas: the upper area is gated and locked at 8 PM; it also has pit toilets. Note: parking fees apply.