Killbear's shore is granite, pocket sand, and pines leaning off the rock toward the near islands on Georgian Bay. The campgrounds are in the woods behind that shore, close enough that the water is the walk after dinner. The wind off the bay is what you hear from the van.
The day stays on that shore: a swim from a sand cove, sun-warmed granite to climb out on, and a walk on to the next beach, with the near islands in view the whole way.
The park strings seven campgrounds through those woods, with sites for every kind of camping equipment. Electrical runs in Kilcoursie, Beaver Dams, Lighthouse and Harold Point. Book one of those four if you want power on the cold shoulders of summer, or if you are coming for Killbear's winter camping window, which stays open after the warm months. If you need more sleeping space than a campervan, look at RVs for rent in Parry Sound.
You reach Killbear on Highway 400 north of Parry Sound, through Nobel. Grey-water dump and potable water stations sit on site, so a week on the bay does not require a run into town just to fill and empty. People who land a site tend to stay on it, because the shore does not run out in a day.
Ontario Parks accepts reservations up to five months in advance of your arrival date, as of September 2026, and Killbear's summer weekends go at that opening. Lock the site before the van. When you can get Killbear, make it the first night and stay.
When those loops are gone, Oastler Lake is the close night, still in Parry Sound and still on the water.
Oastler Lake Provincial Park
The Boyne River feeds Oastler Lake, and the waterfront sites look straight over that water. Parry Sound is close enough for a supply run, and Georgian Bay is still in reach if you want a day on bigger water. Five campgrounds take a van through the warm months, which is the whole season at Oastler. Come for a short weekend, or come because Killbear is gone.
The Point is radio-free, and a trailer dump on site covers fill and empty. Oastler is also the permit desk for The Massasauga. Interior camping permits are issued here and at Pete's Place, which is how a van night turns into a paddle day without moving the van.
The Massasauga is Georgian Bay backcountry on the eastern shore, rugged inlets and rock landings with no road in, and every campsite is accessible by water only. You paddle in from Pete's Place or from Oastler and leave the van on the mainland.
Georgian Bay Islands National Park is on islands and only accessible by boat. Beausoleil Island is the forested landing most people use, reached by Landmark Cruise or water taxi. There is no vehicle camping, so you go as a day from a mainland site at Killbear or Oastler.
North of Parry Sound, Killarney is a Greater Sudbury trip. Algonquin's Highway 60 corridor is a Toronto trip. South, Awenda is the Barrie overnight.