Campgrounds and RV parks near Bull Mountain, MT

Bull Mountain is a low forested range in south-central Montana, rising between Roundup and Billings in Musselshell and Yellowstone counties. The area sits in dry, rolling prairie country broken by pine ridges and sandstone outcrops, with the Yellowstone River corridor to the south and the Bighorn Valley to the east. There are no full-service developed campgrounds within the range itself, so most RV travelers base out of nearby towns and use Bull Mountain for day trips. The closest concentration of RV parks is along the I-90 corridor between Billings and Hardin, roughly an hour south of the range. Options include the Hardin KOA Journey, Grandview Campground and RV Park, and Yellowstone River Campgrounds, along with Billings KOA Holiday on the west side of Billings. The Fort at 49 offers another nearby stop with RV sites. Hardin sits close to Little Bighorn Battlefield National Monument and provides a practical base for combining Bull Mountain scenery with Crow Country history and the Bighorn River.

Private RV parks near Bull Mountain take reservations directly through their websites or by phone. The Hardin KOA Journey is open seasonally from mid-April through early October, and KOA properties can also be booked through the KOA reservation system. Billings KOA Holiday is the closest full-amenity KOA option on the west side of Billings, while The Fort at 49 and Yellowstone River Campgrounds handle their own bookings. Grandview Campground and RV Park in Hardin takes both short stays and extended bookings, which makes it useful for shoulder-season trips. For public land camping on the Custer Gallatin National Forest and other federal sites in the wider region, use recreation.gov; Montana State Parks reservations are handled through the state parks portal. For peak summer weeks, especially around Little Big Horn Days in June and the Fourth of July, book several weeks ahead.