Campsite finder, fit calculator & setup guide
Find a campsite that fits your van — and your tent
A tent that sleeves over your open hatch turns the vehicle into one wall of the tent — which means the vehicle has to park at the tent. That one requirement rules out a surprising number of campsites, and you find out after you have paid for them.
This is the cheat sheet we camp with: six things to check before booking, the real length a vehicle-plus-tent setup needs, and the order we pitch ours in. It comes off our fourth-generation Toyota Sienna and a six-person inflatable tailgate tent, but the site checklist applies to any vehicle-attached tent.
What to look for in a site
Six checks, in the order they will disqualify a site. The first two are the ones people get wrong, because a listing that says "RV friendly" tells you nothing about either.
- Site type — drive-up only Back-in or pull-through. Skip walk-in and tent-only sites entirely — the vehicle has to park at the tent, and a tent-only site puts the parking pad somewhere else.
- Length — confirm the actual number Look for a listed depth of 30+ ft without a canopy, 35+ ft with one. Not "RV friendly," not "big rig." A number, from the reservation page.
- Ground surface — something you can stake Soft dirt or grass. Avoid all-gravel and paved-only pads; a tent whose windward corners are not staked is a sail, and you cannot drive a stake into a compacted gravel pad.
- Level ground behind the parking spot Flat and unobstructed for the full tent footprint, not just where the tires go. A site can be perfectly level under the vehicle and drop away behind it.
- Side clearance for the guy lines Open space on both sides for four guy ropes staked out at 45°. A site boxed in by neighbors leaves nowhere to anchor, and guy lines run flat instead of angled hold badly.
- What is directly behind the bumper Open ground. Not dense trees, and not the fire ring or the picnic table — campgrounds put both exactly where your tent wants to go, and neither one moves.
How much site length you actually need
The tent does not add its full dimensions to the vehicle — only its depth counts, since the width runs across the site. For our setup the math is:
| Component | Length |
|---|---|
| Toyota Sienna, overall length | ~17 ft |
| Tent depth, 8 ft + 3.3 ftThe 6.7 ft dimension is width and is not added | 11.3 ft |
| Total without canopy | ~28.3 ft |
| Canopy overhang + guy line buffer | ~5–8 ft |
| Total with canopy | ~33–36 ft |
Budget ~28 ft if you skip the canopy or awning, ~33–36 ft if you set it up. Check the listed site length before booking — pull-through sites vary widely, and the difference between a 28-ft site and a 36-ft site is whether the awning goes up at all.
Swap in your own numbers below. A short-wheelbase SUV can land near 24 ft; a full-size van with a canopy can push past 40.
Overhead view, drawn to scale from your numbers. The dashed box is the site footprint you need.
Vehicle lengths are approximate and move with trim, year and bumper options — check yours and use Something else if it differs. Tent depths other than ours are typical figures for the type, not a specific product; use your own manufacturer's number where you have it.
Now find one that fits
Your number from above is filled in below. This searches about 2,400 federal campgrounds for sites that will actually take your setup.
Reading the results: “12 of 40 sites fit” means 12 of the 40 sites that publish a length will take your setup — ask for one of those by number when you book. First-come means no reservation system, which usually also means quieter. No paved pads is a good sign for staking a tent, though it describes the driveway rather than the ground you stake into.
Campgrounds that fit your setup
smoresoutdoors.life/find-campsite · federal campgrounds only · confirm the site number when you book
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What this covers
Federal land only — national forests, parks, Corps of Engineers, BLM. No state parks, county parks or private campgrounds, so a thin result for a state means thin federal options there, not that there is nowhere to camp. The Northeast is especially sparse.
About half of campgrounds publish no site length at all; those are excluded rather than guessed at. A site long enough on paper can still have a fire ring or a tree exactly where your tent needs to go — confirm the site number when you book.
Setting it up, in order
Five phases. The order matters more than it looks — the ground cloth has to be tucked before the tent goes on it, and the vehicle has to be prepped before the sleeve goes over the hatch.
- Clear the site. Remove all sharp sticks, stones and pinecones.
- Lay the footprint. Spread the ground cloth or tarp exactly over the cleared zone.
- Tuck the edges. Fold the excess tarp under itself so no edge sticks out past the tent.
- Why it matters: hidden edges stop rain catching on exposed tarp and channeling under the floor. An untucked tarp is a funnel pointed at your sleeping bag.
- Go manual on the hatch. Disable the power liftgate before the sleeve goes anywhere near it — on the Sienna: instrument cluster › Vehicle Settings › Power Back Door (PBD) › Off.
- Save the battery. Switch the interior dome lights to OFF rather than DOOR, or they burn all night with the hatch up.
- Silence the alerts. Disable the third-row rear-occupant alert in the dashboard menu.
- Position the van. Park on flat ground leaving 3–4 ft of clearance behind the bumper.
- Set the brake completely, before any tent work starts.
- Orient the sleeve. Unroll the tent over the tucked ground cloth with the tunnel facing the van.
- Stake the floor. Anchor the four main corners first, keeping the fabric flat but not overstrained.
- Inflate the beams. Hook the pump to the main valves and inflate until the beams are fully firm.
- Heat warning: do not inflate the air bladders to maximum in direct, intense sun — the air inside expands as it heats, and a beam already at maximum has nowhere to put it.
- Open the gate completely, to its maximum height.
- Stretch the sleeve entirely over the open hatch, past the weather seals.
- Roof straps. Clip or tie the top sleeve straps to the roof rack side rails.
- Wheel straps. Anchor the lower side straps to the plastic bumper rims or the rear wheel wells.
- Seal the drawstrings. Pull every integrated drawstring tight around the bumper — this is what keeps bugs out, and it is the step people rush.
- Guy ropes. Stake out all exterior wind lines at a sharp 45° angle.
- Safety rule: never start the engine while the tent sleeve is attached.
- Drive-away. Detach the straps, slide the sleeve off the hatch, and zip up the tent's rear wall to leave camp with the tent standing.
Read this one twice
Never run the engine with the tent sleeve attached. The sleeve seals the tent to the back of the vehicle, and the exhaust is right there — fumes go into a sealed fabric room with people in it. Vent the van before disconnecting, and carry a battery-backup CO alarm in the tent, not just in the vehicle.
The split-zone layout
Once the tent is attached, the useful move is to stop treating it as the bedroom. We sleep in the van and live in the tent:
- Bedroom — the Sienna. Mattress and the EcoFlow inside the van, air-conditioner exhaust vented out through a car vent kit. Cold, dark and bug-free.
- Living room — the tent. Sleeve attached, tailgate closed at night. The tent becomes lounge, changing room and gear storage.
- The battery perk. An insulated cabin is a much smaller space to cool than a tent, so the power station coasts on Eco mode all night instead of running hard.
Where this comes from
These numbers are off our own build. The tent is in the Project S'mores parts list under Sleeping & shelter, along with what it cost and why a pole-frame tailgate tent went back — an inflatable one pitches faster in the dark, by one person.
Before you book
The usual caution
This is what works for our vehicle and our tent, written down so we stop re-deriving it in a dark campground. It is not a substitute for your tent's manual or your vehicle's owner's manual, and the menu paths above are Sienna-specific.
Two things on this page are safety-critical rather than convenience: do not run the engine with the sleeve attached, and do not inflate beams to maximum in direct sun. Everything else is comfort. Measure your own rig before you trust the footprint table — a foot of error is the difference between a site that fits and one that does not.