RV Parks Along Highway 400

Highway 400 carries the bulk of Toronto-to-cottage-country traffic, and for RV travellers this corridor from Barrie through Orillia, Gravenhurst, Bracebridge, and up to Parry Sound is the most-travelled RV route in Ontario. The challenge is that provincial parks along this stretch were designed in an era when a "big rig" was a 25-foot travel trailer, while today's Class A motorhomes regularly hit 38 feet and fifth wheels top 40. Knowing which parks can actually handle your rig before you arrive at a site entrance that is too tight to turn around in is the whole point of this guide.

We evaluate based on what matters to RV travellers: ease of access from the highway, pull-through availability and actual site pad dimensions, hookup amps (15/30/50), dump station locations and whether they work for larger rigs, and the overall park quality once you are levelled and connected. Every park listed has been assessed for specific rig size limits.

Barrie Area - KM 100 from Toronto

Barrie KOA Holiday

Located off Highway 400 at the Essa Road exit, the Barrie KOA is the most convenient RV park on this entire corridor for large rigs. Pull-throughs handle rigs up to 70 feet with 30/50 amp full hookup service. The facilities are professional -- heated pools, playground, mining centre for kids, camp store with groceries, controlled-access entrance. The upgraded KOA Patio sites and Deluxe Cabins are available if you want extras. Wi-Fi is reliable.

The honest assessment: this is a commercial campground, not a wilderness experience. You are paying $55-85 per night depending on season and site type, which is premium for what is essentially an overnight stop location. The road through the park is gravel and kicks up dust in dry weather. But for an overnight stop after driving up from the GTA, or as a staging point before heading north in the morning, it works extremely well. Rated 8.9/10 on RV LIFE.

Springwater Provincial Park

About 20 minutes west of Barrie in a mature hardwood forest. Electrical sites accommodate RVs to about 35 feet, but there are no full hookups -- just power and a dump station. The sites are well-shaded and more private than any commercial park in the area. This is the choice if you prefer trees over amenities and your rig is under 35 feet. No sewer hookups means you need to be self-contained or visit the dump station before leaving.

Orillia Area - KM 130 from Toronto

Bass Lake Provincial Park

Ten km west of Orillia with electrical sites for RVs up to 40 feet, a nice beach on Bass Lake, and a family-friendly atmosphere. The real value of Bass Lake for RV travellers is mid-week availability. While Killbear and Sandbanks are booked solid all summer, Bass Lake frequently has openings Tuesday through Thursday even in July. The town of Orillia is close enough for grocery runs and hardware store visits. The campground fills on weekends but is a reliable mid-week option.

Gravenhurst-Bracebridge Corridor - KM 170-200

Private RV Parks (Muskoka Corridor)

Several private parks between Gravenhurst and Bracebridge offer full hookups, pull-throughs, and resort-level amenities: pools, mini-golf, organized activities. The best ones sit on or near a lake, which adds swimming and boating to the package. Expect to pay the Muskoka premium: $50-85 per night for a full-service site, with lakefront sites at the top of that range. The premium is not always justified -- some of these parks pack sites close enough that you can hear your neighbour's generator and TV simultaneously. Ask about site spacing before booking.

Arrowhead Provincial Park (Huntsville)

Located near Huntsville, about 30 km north of Bracebridge. Arrowhead has 382 sites across three campgrounds: Lumby, East River, and Roe. For RVs, the critical detail is that Roe Campground has a 32-foot length limit on all 71 sites -- if you are driving anything longer, you cannot fit. East River has 141 sites with 107 offering electrical hookups and can handle somewhat larger rigs. Seven pull-through sites are available year-round. The park is rated 9.4/10 on RV LIFE, which reflects genuine quality: two lakes, three beaches, excellent trails including the Stubb's Falls trail. But the internal roads were not designed for big Class A motorhomes. Mid-size RVs and travel trailers do well here; 38-foot rigs should look elsewhere.

Parry Sound Area - KM 250 from Toronto

Oastler Lake Provincial Park

Oastler Lake sits about 7 km south of Parry Sound right on Highway 400, making it the top overnight stop on this corridor for convenience. Electrical sites accommodate RVs to 40 feet, there is a beach on Oastler Lake, and getting back on the highway the next morning takes 2 minutes. The Canadian Shield setting is far nicer than any commercial lot.

The catch nobody mentions until you are trying to sleep: freight trains. The rail line runs close to the park, and 200-car trains pass day and night, each taking 20+ minutes with whistles blowing. Some people sleep through it. Others lie awake cursing. If train noise is a dealbreaker, book Grundy Lake (80 km further north on Highway 69) instead. If you can sleep through anything, Oastler Lake is genuinely excellent. Bring earplugs as insurance.

Parry Sound Private Parks

Several private parks in the Parry Sound area offer full-service RV sites with laundry, camp stores, heated pools, and in some cases lakefront or riverfront locations. Prices run $45-65 per night for full hookup sites, which is less than the Muskoka corridor parks. Quality varies, but the best private parks in this area combine good facilities with the proximity to Georgian Bay that makes Parry Sound a destination rather than just a waypoint.

Highway 400 RV Travel Tips

Friday Traffic

Highway 400 between Toronto and Barrie on a Friday afternoon in summer is a parking lot. If you are towing or driving a large RV, do not depart Toronto after 2 PM on Fridays. Early morning (before 8 AM) or late evening (after 8 PM) departures save you 2-3 hours of stop-and-go. Sunday evenings southbound are similarly bad. The highway north of Barrie is generally manageable, though construction zones between Barrie and Parry Sound create periodic delays.

Fuel and Propane

Fill up in Barrie. Fuel prices increase steadily as you move north. The Flying J truck stop near Barrie handles fuel, propane, and dumping in one stop if you are heading north first thing in the morning. Propane is available at most hardware stores in Barrie, Orillia, Gravenhurst, Bracebridge, and Parry Sound. Diesel is available at most stations along the corridor.

Dump Stations

Provincial parks on this route have dump stations for registered campers. If you need to dump without staying overnight, the Barrie-area truck stops and private RV parks in Orillia and Parry Sound charge $10-15 for dump-station-only access. The Flying J near Barrie is the most convenient for a morning dump-and-go.

For RV parks along Highway 17 east toward Ottawa, see our Highway 17 RV parks guide. For broader overnight stop planning, check our best overnight stops guide. Regional camping details are in our Parry Sound and Muskoka guides.