I have a 38' fifth wheel and we go there all of the time, you'll be fine, just look at the description on reserve america
Silver Lake has very small sites. When we are there, there was a large a Class A motorhome in the space next to us. So they can accommodate your 5th wheel, but the majority of their sites will be too small for you. You'll just have to book far in advance to get one of the (few) larger sites.
I do remember seeing very long units in pull through spots. The trucks often parked to the side.
The Silver Lake Campground is part of the Withalachoochee State Forest. Call the main office and ask them this question. They will know.
No way .go to a rv park with pull thrus
You have to check with campground office or answer may be on website
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