The 287-mile Palouse to Cascades State Park Trail reflects State Parks’ long-term commitment to developing cross-state trails. It is part of an emerging multi-state trail system. The Milwaukee Road Railroad right-of-way, which includes the 250.8-mile Palouse to Cascades State Park Trail portion managed by Washington State Parks and travels east into Idaho for an additional 36 miles.
Improvements have been made to the portion west of the Columbia River, and plans are in place to improve the 9-mile segment from Malden to Rosalia on the eastern portion. The center section, between Royal City Junction and Warden has intact rail; it is not used as part of the recreational trail at this time.
From Renslow to the Columbia River, the trail runs through the Yakima Training Center, managed by the U.S Army. Trail users are required to self-register at one of the two trailheads at Renslow (west) or Doris (east). Other rules for using the trail through the Yakima Training Center can be found online (PDF).
Between Beverly and the Idaho border: Washington State Parks now manages the entire trail from Beverly to the Idaho border. Registration is required for this section of the trail. The registration may be requested to remain valid for up to one year. Individual trail users and groups of 19 and less may complete and submit the registration online. Groups of 20 or more must complete and mail in a hard copy permit with payment. For more information or request a permit to be mailed, call (509) 337-6457.