Most US national parks restrict dogs to parking lots and roads. These 22+ actually let leashed dogs hike (with caveats). Each entry breaks down where dogs are allowed, leash rules, and trails to avoid.
Pet policy: Most-visited US national park (12M visitors/yr). VERY restrictive on dogs — pets ONLY allowed on Gatlinburg Trail and Oconaluftee River Trail (not on hiking trails). Cades Cove Loop Road is dog-friendly while in vehicle. Pet-friendly campgrounds.
Pet policy: Rocky Mountain NP — pets ONLY allowed in established campgrounds, picnic areas, parking lots, and along roads. NOT permitted on any trails. Trail Ridge Road is dog-accessible (in vehicle).
Pet policy: Zion NP — pets ONLY allowed on the Pa'rus Trail (3.5 mi paved riverside). NOT permitted on any other trails (incl. Angels Landing, the Narrows, Emerald Pools).
Pet policy: Bryce Canyon NP — pets allowed on the paved Rim Trail between Sunrise & Sunset Points (1 mi). NOT permitted on any below-rim trails.
Pet policy: Arches NP — pets allowed in campgrounds, parking areas, on roads, and 100 ft from any road. NOT permitted on any trails (including Delicate Arch).
Pet policy: Among the most dog-friendly national parks. Pets allowed on 100+ miles of trails (out of 158) and 45 mi of historic carriage roads. NOT permitted at Sand Beach, Echo Lake Beach, lakes used for swimming, or on a few specific trails (Beehive, Precipice, Beech Cliff Loop).
Pet policy: Leashed dogs welcome on 110+ miles of trails and the 20-mile Towpath Trail. 6-foot maximum leash. Pets NOT permitted in park buildings, on the Cuyahoga Valley Scenic Railroad, or on East Rim mountain bike trails.
Pet policy: Olympic NP has very limited dog access. Pets ONLY allowed on Rialto Beach (north of Hole-in-the-Wall), the Peabody Creek Trail, and the Spruce Railroad Trail. NOT permitted on most trails or beaches. Pet-friendly campgrounds.
Pet policy: NC entrance to GSMNP. Pets ONLY allowed on Oconaluftee River Trail (1.5 mi each way). Strict leash + no other trails.
Pet policy: Among the most dog-friendly national parks. Leashed dogs welcome on 480+ miles of trails (out of 500). Skyline Drive scenic byway. NOT permitted on a few specific trails (Old Rag, Limberlost, etc.). Pet-friendly camping.
Pet policy: Sedona's red rock trails (most are USFS land). Leashed dogs welcome on most trails. Bell Rock, Cathedral Rock, Fay Canyon — all dog-accessible.
Pet policy: Canyonlands NP — pets allowed in campgrounds, parking areas, paved roads, and the picnic area in Island in the Sky. NOT permitted on any backcountry trails.
Pet policy: Carlsbad Caverns NP — pets allowed on the surface in parking areas. NOT in caverns. ON-SITE KENNEL available for cave-touring days ($10/dog).
Pet policy: Cape Cod National Seashore — leashed dogs welcome on most trails and beaches off-season (Sept 16 - June 14). Restricted from protected shorebird nesting beaches in summer.
Pet policy: Hot Springs NP — pets welcome on ALL park trails (one of the most dog-friendly NPs!) and along the historic Bathhouse Row promenade. Not permitted in bathhouse buildings.
Pet policy: America's newest national park. Leashed dogs welcome on most trails (6-foot max). NOT permitted on the Endless Wall Trail or in visitor centers.
Pet policy: Capitol Reef NP — pets allowed in developed areas, the campground, and on roads. NOT permitted on trails or off-road.
Pet policy: 800,000+ acres of NE forest. Leashed dogs welcome on most trails. NOT permitted on AMC hut trails or in Lonesome Lake Hut/Mizpah Hut interior.
Pet policy: Blue Ridge Parkway (469-mi national parkway). Leashed dogs welcome on overlook walks and most trails.
Pet policy: Denali NP — pets allowed in campgrounds, picnic areas, and on the Denali Park Road. NOT permitted in the backcountry. Sled dog kennels open to visitors (free demos).
Pet policy: Lake Superior shoreline national lakeshore. Leashed dogs welcome on mainland trails and most beaches. NOT permitted on most ferry-served islands or in visitor centers.
Pet policy: Leashed pets are welcome on the vast network of trails throughout the forest's multiple units.