Reviewed by Ben Kiser, RV rental operator and fleet consultant.
Bahia Honda’s Sandspur loop stops at 23 ft, hitch to bumper. Of the 71 RVs whose delivery reaches it, 11 are that short. Pennekamp takes 80 of 81. Long Key takes none at all.
No source we read permits overnight RV parking outside a campground, so plan every night on one of these sites. Book the site first, then the RV that fits it.
Gathered from Florida State Parks, the Key West code and each campground’s own pages. Tightest first, because the shortest limit on your trip decides the rig.
| Campground | Area | Tightest limit | Where it applies | What it does |
|---|---|---|---|---|
| Long Key | Middle Keys | No RV sites | Campground | Hike-in tent sites only, no hookups |
| Key West | Key West | 20 ft | Every City of Key West street | A rule, not a campground cap |
| Bahia Honda | Lower Keys | 23 ft | Sandspur loop, sites 49 to 72 | Nothing longer admitted |
| Pennekamp | Upper Keys | 40 ft | Campground | Longest the sites or booking take |
| Curry Hammock | Middle Keys | 70 ft | Campground | Nothing longer admitted |
| Marathon | Middle Keys | No length published | Grassy Key RV Park | Check in by 4:30 p.m., no late arrivals; RVIA seal required |
Key West's 20 ft figure is a street rule, not a campground cap. Your RV can be longer; it just stays at the campground while you go into town. Marathon’s private parks publish no length at all, so the deciding fact there is an arrival time.
Upper Keys
What decides it here
42 sites with full hookups, and two official figures for how long an RV can be: the park page says most sites take 40 ft, the reservation system lists 62.
102601 Overseas Highway, Key Largo
Middle Keys
What decides it here
The easiest state park in the Keys for a big rig: 70 ft maximum, 28 gravel sites with 50 amp and water, and a dump station. The catch is the 14-night cap and the three nights out after it, which a delivered trailer cannot do on its own.
56200 Overseas Highway, Marathon
Middle Keys
What decides it here
Long Key takes no RVs. Its campground is hike-in tent sites with no hookups, so an RV booked for Long Key has nowhere to park.
67400 Overseas Highway, Long Key
Middle Keys
What decides it here
Jolly Roger is the only campground in the Keys that says it works with companies that deliver and set up rented RVs. Grassy Key turns away anyone arriving after 4:30 p.m.
Marathon and Grassy Key, Overseas Highway
Lower Keys
What decides it here
Three loops, three different answers. Buttonwood takes large RVs, Sandspur stops at 23 ft hitch to bumper, and Bayside sits behind a bridge with 6 ft 8 in of clearance.
36850 Overseas Highway, Big Pine Key
Key WestMile markers 5 to 14
What decides it here
Three parks, three different catches. Boyd's takes 45 ft only in select sites and sets a four-night minimum over Fantasy Fest and the holidays. Leo's stops at 42 ft counting bumpers and bike racks. Bluewater turns away late arrivals and bans driving the RV once you're in.
Stock Island, Key West, Geiger Key and Big Coppitt
Almost every RV for the Keys comes down US-1 from Miami and Homestead. The listings show how far each host’s delivery reaches, and each campground page shows only the ones that fit.