Access to the Boundary Trail is via the Spirit Lake Memorial Highway (FR 504), where you'll find free parking and a trailhead. While there are no restrooms or water here, other interlinking trails provide them when conditions allow, particularly at the Coldwater Lake access area. Bring something to tote water, and clean up bags for the journey. Note also that some other intersecting access trails require either a Northern Pass or parking fee. Be sure to check prior to embarking.
The narrow dirt Boundary Trail, which was once important as a route for horse-riding rangers on patrol, meanders through sub-alpine meadows and open forest, where it's possible you and Fido may spy coyotes, raptors and elk. Herds of elk can sometimes be seen passing across the tundra as you and your furry buddy watch from a ridge above. Be sure to keep a firm hand on the doggo's leash!
A portion of the trail passes along Johnston Ridge, from which you'll have pawsome views of several mountains including glimpses of Mount Hood, Mount Rainier and Mount Adams along with Mount Saint Helens. An observatory perches at the end of Johnston Ridge, but be aware that dogs are not permitted here. While dogs are allowed on several of the trails inside the Forest, they are only allowed along the section of Boundary Trail #1 between the Coldwater Trail #230 and the Norway Pass Trailhead, so do plan your route accordingly. Winter hiking is pupular in this area when the roads are passable. Views of Spirit Lake and Coldwater Lake are lovely distractions as they reflect the craggy heights around them.
Backpacking is permitted on this trail, and a shuttle from the end to bring you back to the trailhead allows for entry at several spots, such as Norway Pass or Hummocks Trail. Whatever you and the pooch are seeking, you'll find it here on the furtastic Boundary Trail!