40 foot or less COMBINED length in yellowstone?

There are many sites that will not accommodate larger rigs, however I believe what they are talking about is almost all the sites will not accommodate rigs where your total UNHOOKED length exceeds 40 feet. If you plan on not unhooking your rig, the maximum length must be less than that 40 feet. Same with Motorhomes towing trailers that stay connected. If your total length exceeds 40 feet, you will have to disconnect and park the tow or towed separately.