Best Campgrounds for 40 Foot RVs

Of the 31,420 real campsites RVFitFinder tracks nationally, 21,857 (70%) confirm a maximum vehicle length of 40 ft or more — sourced directly from each site's own Recreation.gov listing, not estimated or rounded up from a shorter number. That share isn't even across the country: some states are far better bets than others.

Where 40ft+ sites are most common

Based on current tracked data, the states with the most confirmed 40ft+ sites are concentrated in the central U.S. — Oklahoma, Missouri, Texas, Kansas, and Arkansas each have over 1,400 tracked sites at that length or longer, largely at U.S. Army Corps of Engineers lake campgrounds, which tend to have more spacious, modern layouts than older National Park Service loops.

Raw counts only tell part of the story. Texas stands out on a percentage basis: 94% of its 2,268 tracked sites are rated 40 ft or longer, the highest share of any state with meaningful coverage. Kansas (89%) and Oklahoma (82%) aren't far behind. Arkansas has more total 40ft+ sites than Kansas, but at just 56% of its tracked inventory, a large rig actually has noticeably worse odds there than the raw number suggests.

How concentrated is this nationally?

528 distinct campgrounds across 41 states have at least one confirmed 40 ft+ site, out of everything RVFitFinder tracks. Big-rig-friendly camping isn't limited to a handful of destinations — but it also isn't guaranteed at any given campground, which is exactly why checking the individual site, not just the state or park, matters before booking.

What else to check besides length

Of the 21,857 sites confirmed at 40 ft or more, 12,299 also have a confirmed hookup and 1,856 are pull-through — useful filters on top of length alone, since a 40ft-rated back-in site in a tight, wooded loop is a different experience than a 40ft pull-through with full hookups. That mix varies by state too: in Texas, 2,114 of 2,127 forty-foot-plus sites (99%) have a confirmed hookup, while Kansas has an unusually high pull-through share at 236 of 1,612 sites (15%).

Check your exact rig

State and national numbers are a starting point, not a booking decision. Use the 40-foot RV campsites page or the RVFitFinder tool to see the real, individual sites behind these numbers — including the specific campground, driveway type, and hookup status — before you commit to a reservation.