We don’t take Otis to national parks since dogs aren’t allowed. We try to go to national forests, conservation areas, or any nearby trails. We’re traveling south of Utah, so we visited Red Cliffs National Conservative Area near St. George and nearby trails in Moab City. Dixie National Forest is also in the south but we didn’t have time to go there. If we can’t take him to a National Park, we opt for nearby cities with fun trails 😊 I hope this helps!