Holter Lake gets most of the nights on an RV week out of Great Falls, the rig parked on gravel under poplar and green ash with the Missouri spread out in front and the Sleeping Giant ridge behind. Afternoons bring wind across the open water, so the awning comes in early and the fishing moves back to the shore. Upriver, the lake pinches into the Gates of the Mountains, limestone walls up to 1,200 feet that close over the channel, with bighorn on the rock above the water.
Great Falls' tourism board routes its Lewis and Clark loop drive past this stretch of river, and for a family in a motorhome it's a week the interstate makes easy. You get dry nights on the lake, a day on the water in the canyon, and Great Falls itself at either end.
Holter Lake and Log Gulch, down I-15 and Recreation Road
The first night goes to Great Falls RV Park on full hookups, and the next two or three belong to Holter Lake Campground on the Missouri. The BLM lists Holter's gravel pads with no hookups but with potable water throughout the campground, so the fresh tank can top up at the lake.
Log Gulch, on the same lake, takes the back half of the week with a bigger campground and gravel pads of its own. Recreation.gov puts it about 60 miles south of Great Falls, with no hookups and no black or grey water dump on site.
So the tank plan runs through town. Empty black and grey on the sewer hookup in Great Falls before heading south, run the lake nights on what the tanks hold, and come back to Great Falls RV Park for the last night to empty them again.
The Gates of the Mountains are seen from the water, on a 120-minute cruise from a marina 3 miles off I-15 that runs between the canyon walls. As of September 2026 the tours are closed for the 2026 season, with 2027 tickets going on sale in January. Lake nights before the 2027 season go without the cruise.
Giant Springs and the Lewis and Clark stops in Great Falls
Back in town, Giant Springs pushes 54-degree water out of the ground and into the Missouri, and the Roe River that carries it there is short enough to take in at a glance from the path. It's a good morning for kids who spent the week on a lake, with the big river running right past.
Giant Springs State Park is day use only and open all year, so it's an outing from the RV park and the rig sleeps back on its hookups. The Lewis and Clark Interpretive Center, on the same stretch of river, tells the expedition's story at the falls, and as of September 2026 it opens weekdays only.
Great Falls points in other directions too. The Rocky Mountain Front rises off the plains to the west, and downriver the Missouri runs past Fort Benton into the Breaks. US-89 climbs south into the Little Belts, and all three suit two people in a smaller vehicle, which the Great Falls campervan page covers. A rig continuing on to Glacier should start with the Glacier National Park RV page, which carries the park's length limits and campground caps.