Dogs are welcome on trails like the Lewis River Trail and its waterfalls, around Walupt Lake, and on segments of the Pacific Crest Trail. Leash at campgrounds such as Tillicum and keep pets under control elsewhere.
Road repairs and closures affect access in 2026, including upper State Route 504 toward the monument.
A 6-foot leash is required in developed recreation areas like campgrounds, picnic areas, and trailheads. On the general forest and most trails there is no leash law, but your dog must be under control at all times.
Service animals are allowed where pets are not, under the ADA. A leash is still required.
Southwest Washington's Gifford Pinchot wraps around Mount Adams and the Mount St. Helens National Volcanic Monument, with waterfall and lake trails open to dogs. Dogs are welcome on trails like the Lewis River Trail and its waterfalls, around Walupt Lake, and on segments of the Pacific Crest Trail. Leash at campgrounds such as Tillicum and keep pets under control elsewhere.
A 6-foot leash is required in developed recreation areas like campgrounds, picnic areas, and trailheads. On the general forest and most trails there is no leash law, but your dog must be under control at all times.
Road repairs and closures affect access in 2026, including upper State Route 504 toward the monument.
Service animals are allowed where pets are not, under the ADA. A leash is still required.