The best hiking in Castle Rocks State Park Idaho starts at the Castle Rocks Ranch Unit and the Stines Creek Picnic Area. Within the Ranch Unit, you can explore the 2-mile Backyard Boulders Loop. Or venture further into the geological complex toward Eagle Rock Grove, Shark’s Fin, and Brackenbury Gulch. Keep reading for trail maps and our pick for the best easy day hike, the Backyard Boulders Trail.
City of Rocks Climbing. Hiking. Camping. The City of Rocks and Castle Rocks State Park offer some of the most diverse and interesting climbing areas in the Pacific Northwest. Climb moderate to advanced single- and multi-pitch routes; no special permits needed. If you want to place permanent anchors, you can find the permit forms on
Explore Idaho National Parks and the City of Rocks National Reserve. Hike, backpack, climb, bike, and ride your way through this scenic geological area. Get all the best recommendations and trip ideas here.