Public campgrounds along the Beartooth Scenic Highway, AKA US-212 from Red Lodge, MT into the northeast section of Yellowstone National Park, are plentiful. Though this byway is less than 70 miles long, it's considered one of the most beautiful scenic highways in the US. Bear in mind that because of the elevation, this highway is normally open only from about mid-May to mid-October, and can close quickly in the event of an early snowstorm. All but one of the listed campgrounds are in the Custer-Gallatin and Shoshone National Forests. There may be opportunities for dispersed camping; inquire at a ranger station for information.
A general website for information about camping along the Beartooth Highway
Another informative website about the Beartooth.
Cooney State Park, Roberts
Greenough Lake CG, Custer NF, Red Lodge
M-K CG, Custer NF
Note: This one is listed as FREE. But they don't take reservations, and it's very popular, so arrive early in the day.
Limber Pine CG, Custer NF
Parkside CG, Custer NF
Sheridan CG, Custer NF
Rattin CG, Custer NF
Island Lake Campground, Shoshone NF
Beartooth Lake Campground, Shoshone NF
Crazy Creek Campground, Shoshone NF
Fox Creek Campground, Shoshone NF
Note: This campground was closed during the 2019, 2020 and 2021 season due to construction along the Beartooth Highway.
Colter Campground, Gallatin NF
Note: Hard-sided unit camping only, due to bear activity.
Soda Butte Campground, Gallatin NF
Note: Hard-sided unit camping only, due to bear activity.