Martok on the North Rim of the Grand Canyon
The Grand Canyon is a 3-paw park offering 3 trails for dogs. One on the south rim and 2 on the north rim.
Rocky Mountain National Park
Rocky Mountain National Park get a 1-paw rating. It doesn't have any dog friendly hikes. There are many dog friendly hikes outside the park.
K'Ehleyr at Gates of Ledore
Dinosaur National Monument
Dinosaur National Monument has 1 dog friendly trail in Utah and a few more in Colorado. Dogs can also travel with you to the exhibit hall but not inside of it.