Hay fields below the Sapphire Mountains catch the last of the light at Hamilton, with the sprinklers still working the pasture. Past the picnic table the Bitterroot River slides by the campground, clear enough to count stones from the bank.
The valley opens south of Missoula along US-93, and by Hamilton the city has given way to hay ground, river bottom and mountains on both sides. Most of the week the rig doesn't move. Days run south to Lake Como, where the Como Peaks stand over a sandy beach on an irrigation reservoir, and dinner is back at the same riverside site with the bikes still leaning where the kids dropped them.
It suits a family in a 30-foot motorhome, or a trailer set on a pad, for seven nights, with a night or two at the lake to break the week up. When the valley has done its work, Georgetown Lake near Philipsburg is the second summer trip.
Angler's Roost on the Bitterroot at Hamilton
At Angler's Roost in Hamilton, the rural sites sit along the Bitterroot itself, close enough to hear the river from the step. The upper campground holds the larger pull-through, full-hookup sites, the ones to ask for with a longer motorhome or when the plan is a full week on sewer. Black Rabbit RV and Bitterroot Valley RV and Campground are Hamilton's other parks if your dates don't work.
Book the pad before the rig. Angler's Roost takes reservations by phone, and the form asks whether you need 30 or 50 amp, so have the class narrowed down when you call and let the site you land settle the final choice.
Lake Como by day, and a night or two at Lower Como
Between Darby and Hamilton, the Como Peaks rise off the far shore of Lake Como, and the sandy beach below them is where a Bitterroot afternoon goes. It's a well-loved lake, with the Forest Service counting over 200,000 visitors a year and a day-use pass required from Memorial Day to Labor Day, as of September 2026.
A night or two at Lower Como puts you on the beach at first light, before the day crowd drives in. Its campground runs a pull-through loop with electric and water hookups and no sewer, so the stay is short by design. Then the rig heads back up the valley to Hamilton to empty the tanks and finish the week on full hookups.
Georgetown Lake's pine loops at Philipsburg Bay and Piney
Lodgepole pines ring Georgetown Lake at 6,000 feet near Philipsburg, and the peaks of the Anaconda-Pintler Wilderness stand over the water. Plan a few nights parked in the trees, with coffee at the shore in the morning and a line in the lake by afternoon.
Philipsburg Bay and Piney are the two big Forest Service loops on the shore, both open mid-May through late September and both booked through Recreation.gov, so reserve the site before choosing the rig. Philipsburg Bay's recommended maximum trailer length is 32 feet, which is the number to hold a towable to. Neither loop has hookups, so arrive from a Missoula or Hamilton park with the fresh tank full and the others empty.
Rock Creek and Philipsburg town, Seeley Lake and the Swan, and Lolo Pass make better two-person trips in a smaller rig, and the Missoula campervan page covers them. Glacier National Park is summer's big drive north from Missoula, up past the long blue water of Flathead Lake, and the Glacier RV page carries the park's campground caps and the length limit on Going-to-the-Sun Road. A week parked on Flathead itself is its own trip from the Kalispell RV page.
