Field guide · 01

Three lengths.
Three different questions.

The number on a campsite listing is only useful when you know what it measures. Start with your actual equipment and keep each limit in its own context.

1. The equipment length

A motorhome length limit applies to that equipment type. A trailer-specific limit may measure only the trailer. Use actual overall measurements and confirm whether projections are included; a model name or marketed floor-plan number may not equal the vehicle’s measured length.

CampsiteCheck preserves separate rules for motorhomes, camper vans, pickup campers, travel trailers, and fifth wheels. A missing limit for one type is not filled with the value published for another.

2. The connected towing length

Measure the tow vehicle and trailer while connected in travel configuration, from the foremost point to the rearmost point. Do not substitute the sum of two separate vehicle lengths. Fifth-wheel and other overlapping couplings can make the sum inaccurate.

The Federal Camping Data Standard describes a combined tow-vehicle-and-trailer meaning for its trailer maximum-vehicle-length field. That definition is useful context, but a legacy field is not assumed to follow it without record-specific support. When the basis is unclear, the result remains unknown. Local equipment rules still apply separately.

3. The driveway length

This is the length of a parking surface. It does not establish an allowable RV length, turning radius, overhead clearance, or permission to park the tow vehicle elsewhere. The driveway may be longer than the equipment limit and can still have an approach your setup cannot negotiate.

A real example: Ohanapecosh E002

The accepted records for Site E002 at Ohanapecosh Campground list a motorhome equipment limit of 25 ft and a trailer equipment limit of 18 ft. The normalized driveway-length field is conflicting sources. Open the original values on the site page to see why the fields stay separate, including any unresolved disagreements.

Bring a usable set of measurements

  • The actual overall length of the selected equipment.
  • If towing: the trailer-only length and the measured connected setup length.
  • Your measured height if clearance is a requirement.
  • The number of additional vehicles and any required outlets or individual accessibility features.

Feet and inches are the primary units. If you measure in meters, CampsiteCheck converts using exactly 0.3048 meters per foot before comparison. Display rounding never changes the comparison outcome.

At the limit is still at the limit

Equality is labeled At the published limit. It is not extra maneuvering room. We do not invent a clearance allowance or silently require a smaller rig, and the displayed result does not establish the geometry of the approach.

Use the site’s official link to confirm restrictions, current conditions, and remaining questions before making plans. Check your measured setup.