Where to Stay?
BIGHorn National forest
The Bighorn National Forest is the home to countless miles of dispersed camping as long as you're in the National Forest. REMEMBER, you can stay there for 14 days, you must be 100 feet from a watershed, watch for fire bans, pack out your trash! Contact the Bighorn National Forest for more information.
Tongue river Canyon
There is free camping in Tongue River Canyon that is managed by the Amsden Creek Wildlife Habitat Management Area. You can only camp in designated areas. The camping areas are clearly marked and there are limited areas. If it is full, you can check out The Foothills Motel and Camping in Dayton, WY (5-miles away).
South Piney creek canyon
Although this canyon is technically in the National Forest, the parking and most of the trail up to the creek is on Sheridan County land, which does not permit dispersed camping. Check out the Wagon Box RV Park for camping (2-miles form trailhead). Tell them you're a climber and you get a discount on camping.