Mack Mountain ATV & Twin Sisters Jeep Trails
The Mack King Jeep Trail (#98) and the Twin Sisters Jeep Route (#109) are two notable off-highway vehicle (OHV) trails located within the Colville National Forest, offering enthusiasts a blend of challenging terrain and scenic vistas.
Mack King Jeep Trail (#98):
This trail is accessible via the Colville National Forest’s Motor Vehicle Use Map (MVUM) and is also trackable through the Avenza mapping app. Maintained by the U.S. Forest Service in collaboration with the Tri-County Motorized Recreation Association, riders should be prepared for obstacles such as deadfall, loose rocks, deep ruts, off-camber washouts on steep slopes, and deep holes in streambed areas. Vehicle damage is common, making this trail suitable for experienced operators with well-equipped vehicles.
Twin Sisters Jeep Route (#109):
Spanning approximately 10 miles, the Twin Sisters Jeep Route is situated on the northern side of the forest. The trail weaves through wooded areas with some open spots that offer scenic views of the surrounding landscape. Access can be gained by traveling up Forest Service Road #800 for about 1.5 miles, then turning left onto Road #840. A short distance later, a berm designed to restrict full-sized vehicle access marks the trail’s entrance. After crossing the berm, the trail begins approximately 2.5 miles from the 800/840 road intersection. Current trail conditions are variable; riders should be prepared for potential obstacles such as fallen trees and are advised to check for recent updates before embarking.
General Recommendations:
Both trails are best suited for short-wheelbase, high-clearance vehicles due to their challenging nature. Riders should consult the Colville National Forest’s MVUM to ensure compliance with designated routes and to stay informed about any trail-specific regulations or updates.
These trails offer a rewarding experience for those seeking adventure amidst the natural beauty of the Colville National Forest.
Motorized vehicle users: Make sure you have your MVUM with you!
Motor Vehicle Use Maps (MVUM) are the official maps for designating all roads and trails available for public motorized travel on the Colville National Forest. Visitors should not rely on any other map for making decisions about motorized travel. A MVUM is a legally enforceable document that identifies the roads, trails, and areas where motor vehicle use is allowed in a Forest Service administrative unit or ranger district. Forest User Maps combine information from the Motor Vehicle Use Maps and firewood cutting information. This provides a single map that includes the necessary information you will need to navigate the forest for recreation, firewood cutting, and other adventures.
