Bahia Honda State Park Campground

Bahia Honda State Park lies near Big Pine Key, about 37 miles (roughly 60 km) northeast of Key West; the entrance lies between mile markers 36 and 37 of the Overseas Highway. Its history is tied to Henry Flagler's railroad to Key West in the early 20th century, and the old Bahia Honda railroad bridge is still a landmark. The park offers beaches, snorkeling, kayaking, birdwatching and a marina with a boat ramp. The long beach is regarded as the largest natural sand beach in the Keys; Calusa and Sandspur Beach have picnic pavilions, and you can swim in both the Atlantic and the Gulf of Mexico. A section of the old bridge gives wide views over the island and the water. Snorkelling boat trips are offered through the park concession; in high season it is wise to book early.

There are about 80 campsites in three camping areas. Buttonwood (sites 1–48) takes tents and larger RVs, while Sandspur (49–72) accepts only vehicles up to about 23 feet (7 m). Bayside (73–80) is primitive, with a vehicle height limit of 6 feet 8 inches (about 2 m). Florida residents can reserve 11 months ahead, everyone else 10 months (as of October 2026). When it is very busy, the park may temporarily close its day-use areas; on weekends, arrive early. There is little shade on the beaches.