Diamond Lake from the site is still water under Mount Thielsen, with the first bikes rolling out onto the 11-mile paved path around the shore. A mile up in the Cascades, the week falls into an easy shape: the path and the lake on the slow days, Crater Lake on the big one, and the same site to come back to every night. That's what a motorhome is good for here. Nobody repacks, the kitchen stays set up, and the kids have a bunk to collapse into after a day on the rim.
Roseburg puts the approach on the river. OR-138 heads east out of town along the North Umpqua, the stretch of the Rogue-Umpqua Scenic Byway known as the Highway of Waterfalls, so the drive up can hold a night beside the water before the lake.
Diamond Lake RV Park, the base for the week
The rig settles in at Diamond Lake RV Park, close enough to the lake that the paved path becomes the family's morning routine. Sites are full hookup with 30 or 50 amp service, with laundry and showers, and tents aren't allowed, which matters if part of the group planned to pitch one beside the motorhome. With power and sewer at the site, a family can run the heater on a cold mountain night and wash a load of towels without ever breaking camp.
The lake is busy all summer, so reserve the site first and rent the rig to match it. If the RV park is full, the Forest Service runs Diamond Lake, Broken Arrow and Thielsen View campgrounds around the shore, booked through the agency, and Diamond Lake Campground's lakeshore sites put you right on the water. If it's just two of you chasing one of those sites, a smaller rig from the Oregon campervan listings takes the guesswork out of site length.
Crater Lake through the north entrance
Somewhere midweek, everyone loads up for Crater Lake. The RV park is seven miles from the national park, so it's a short drive up the north entrance road to the rim and that famous blue water, and you're back at Diamond Lake in time to cook dinner at the site.
Rim Drive, the road around the caldera, is the heart of the Medford campervan page, and sections of it close seasonally as of September 2026, so check what's open before planning the full circuit. Families coming at the park from the south have their own bases, written up on the Klamath Falls and Medford RV pages.
The North Umpqua and Susan Creek on OR-138
East of Roseburg, OR-138 follows the North Umpqua under old-growth fir and cedar, the river running emerald green below the road. It's the kind of drive where somebody always wants to stop, and the first night can be spent right on the water.
Susan Creek Campground makes that night if the family can do one stop without hookups. It has flush toilets and showers but no hook-ups, and it's reservation only. From camp there's a falls trail and access to the North Umpqua Trail, and the river along the campground is a fly-fishing-only stretch, so leave the spinning rods packed. The next morning it's the rest of OR-138 up to Diamond Lake, where the hookups are waiting.