Will it fit?
A campground says 35 feet. Your fifth wheel says 34 feet and your truck says 20. Here is that rig, drawn against that driveway at the same scale, with the arithmetic shown and the overflow hatched in red.
Does not fitA 35 ft driveway is 15 ft shorter than the 50 ft rig.
The truck's 4 ft of overlap in the bed is subtracted, so 20 + 34 is 50 ft on the ground. Unhitch and park the truck elsewhere and the 34 ft trailer alone clears a 35 ft driveway, barely. Both answers are a click apart in the calculator.
What this site answers
Your combined length, not a brochure length
Tow vehicle plus hitch gap plus trailer, or truck plus fifth wheel minus the bed overlap. The figure that has to sit on the driveway.
Limits quoted, not summarised
Every campground page carries the official sentence the number came from, the page it came from, and the date it was read.
Missing numbers stay missing
Where an official page states no limit, the page says "not stated". Zion's Watchman has verified hookups and no published campground-wide RV length, so it has no fit page yet.
No availability, ever
This is a measuring tool. Reservations happen on Recreation.gov or the park's concessioner, linked on every campground page.
Campgrounds with a verified limit
- Upper Pines CampgroundYosemite National Park. No hookups at sites35 ft RV, 24 ft trailer
- North Pines CampgroundYosemite National Park. No hookups at sites40 ft RV, 35 ft trailer
- Lower Pines CampgroundYosemite National Park. No hookups at sites40 ft RV, 35 ft trailer
- Mather CampgroundGrand Canyon National Park (South Rim). No hookups at sites30 ft RV
- Trailer Village RV CampgroundGrand Canyon National Park (South Rim). 30/50 amp electric50 ft RV
- Fishing Bridge RV ParkYellowstone National Park. 30/50 amp electric95 ft combined
All verified campgrounds, and the ones that did not qualify
Guides
-
Fit method, October 16, 2026
Campground Driveway Length vs RV Length: Which Fits
Campground driveway length vs RV length: one is a measured spur on one site, the other is the longest unit the campground accepts. How to read both.
-
Fit method, October 15, 2026
RV Trailer Combined Length Campsite Fit, Measured
RV trailer combined length campsite fit: add tow vehicle, hitch gap and trailer, subtract fifth-wheel overlap, then compare it to the right park limit.
-
Hookups, October 14, 2026
Campground Hookups Explained: 30 vs 50 Amp, Water, Sewer
Campground hookups explained: what 30 amp and 50 amp pedestals supply in watts, what water and sewer mean, and which national park campgrounds have none.
-
Finding sites, October 13, 2026
35 Foot RV National Park Campsites: How to Find Them
35 foot RV national park campsites: how to filter Recreation.gov by length, what the length field measures, and six campgrounds with limits verified today.