In 2015, two Washington state representatives from the 9th district attempted to include language in an amendment to the state's 2015 capital budget that would close a section of the trail east of the Columbia River. It was later revealed that a typo, referring to the closed section as "from the Columbia River to the Columbia River", nullified the amendment temporarily. In April 2018, Washington State Parks proposed renaming the trail and Iron Horse State Park to resolve confusion. The Washington State Parks and Recreation Commission adopted a new name, the Palouse to Cascades State Park Trail, in May.
Hyak – provides access to the 2.3-mile long Snoqualmie Tunnel through the crest of the Cascade Mountains. In winter this site provides a public sledding area and ski trails groomed for track and skate style cross country skiing from Hyak eastward. Washington DOT Sno-pass parking is required at this site in winter. Within walking/snowing/skiing distance is a state parks owned lodge.
Easton – descending the eastern slope of the Cascades
Army East – at the eastern edge of the stretch passing through the Yakima Training Center as it reaches the Columbia River
Tunnels
The trail features six tunnels, including the longest trail tunnel in the world, the Snoqualmie Tunnel, which was #50 on the railroad's numbering system. The other five tunnels in order are the Boylston, Thorp, Picnic Area, Easton and Whittier. The Boylston Tunnel was also known as the Johnson Creek tunnel to the railroad and sometimes tunnels #46 and #47 are known as the Thorp Tunnels.
Undeveloped
Access points to the undeveloped portion of the trail, managed by Washington State Department of Natural Resources, have not been formally opened to the public. However, the trail provides access to the unique geological erosion features of the Channeled Scablands regions of the state of Washington, and several stretches have been recognized as providing access to this area created by the cataclysmic Missoula Floods that swept periodically across eastern Washington and down the Columbia River Plateau during the Pleistocene epoch. At Malden, once home to the largest railroad turntable in the world, Washington State Parks is planning a trailhead in the former rail yard.