Quick Definition
Key Largo is the largest and northernmost island in the Florida Keys — 33 miles long from Card Sound Road (CR-905) at the north to Tavernier Creek at Mile Marker 91 at the south, spanning MM 106 to MM 90. The island's population of approximately 10,000 makes it the most populated key outside Key West. Key Largo earned its name from the 1948 Humphrey Bogart/Lauren Bacall film "Key Largo," which was filmed on a studio backlot but used the island's name to invoke tropical mystery. The island's legitimate claim to fame is John Pennekamp Coral Reef State Park (MM 102.5) — the first undersea state park designated in the United States (established 1963), covering 70 nautical miles of Atlantic reef system and protecting the only living coral barrier reef in North America. Crocodile Lake National Wildlife Refuge (MM 106.5) holds the largest remaining American crocodile population in the US — approximately 500–600 individuals. Key Largo also claims the African Queen (the actual steam-powered boat from the 1951 Bogart/Hepburn film), which operates tourist cruises from the Holiday Inn at MM 100. For the wider Keys picture, explore Florida Keys RV parks.
TL;DR
- Largest island in the Florida Keys: 33 miles long, population ~10,000, MM 106 to MM 90
- John Pennekamp Coral Reef State Park (MM 102.5): first undersea state park in the US (1963), 70 nautical miles of reef, glass-bottom boat tours $32/adult
- Christ of the Deep: 9-foot bronze statue submerged at 25 feet — most photographed dive site in Florida
- Crocodile Lake National Wildlife Refuge (MM 106.5): 500–600 American crocodiles — largest US population
- The actual African Queen steam boat from the 1951 film operates cruises at MM 100
- Key Largo is the only Keys destination reachable in under 90 minutes from Miami — proximity drives heavy weekend traffic
Key Largo RV Access Zones: North Key Largo, Pennekamp Corridor & Tavernier
North Key Largo / Card Sound Road (MM 106–104). The northern tip of Key Largo accessed via Card Sound Road (CR-905) is quieter and less developed than the US-1 corridor. Card Sound Road passes through the Crocodile Lake NWR buffer and connects to Alabama Jack's — a legendary waterfront bar and fried conch sandwich spot on Card Sound Bay that's been a Keys institution since 1953. North Key Largo has a handful of small campgrounds and nature-focused parks in the MM 104–106 range. This zone is closest to the Florida mainland (22 miles from Homestead) and offers the most remote, least-commercial Keys experience.
John Pennekamp / US-1 Corridor (MM 99–104). The primary RV zone for Key Largo, centered around John Pennekamp Coral Reef State Park (MM 102.5) and the main commercial strip on US-1. Key Largo Kampground (MM 101.5), John Pennekamp State Park campground (47 sites, MM 102.5), and America Outdoors (MM 97.5) anchor this corridor. All parks here are within 5–10 minutes of the Pennekamp visitor center and dive/snorkel tour departures. The Holiday Inn (MM 100) docks the African Queen and operates the onsite Bogart's bar — worth a walk-through even without staying there.
Key Largo Village Center (MM 95–99). The US-1 commercial center between MM 95 and MM 99 contains most of Key Largo's restaurants, grocery stores, dive shops, and services: Winn-Dixie (MM 101.5), Walmart (MM 101.8), and a full selection of dive operators. Parks in this zone are slightly further from Pennekamp but within walking or biking distance of all services. The Key Largo Chamber of Commerce (MM 106) maintains the most complete dive operator listing — verify current operators and pricing before booking.
Tavernier (MM 91–95) — Southern Key Largo. Tavernier Creek at MM 91 marks the southern boundary between Key Largo and Islamorada. The Tavernier zone provides access to both Key Largo (north) and Islamorada (south) from a single campsite. Florida Keys Wild Bird Rehabilitation Center (MM 93.6, free) rehabilitates injured Keys birds — brown pelicans, ospreys, and herons in open-air flight cages. Harry Harris Beach (MM 93, Tavernier, free on weekdays) is a county park with a swimming beach, picnic facilities, and boat ramp — a local alternative to Pennekamp crowds. Travelers heading south can find more options at Islamorada RV parks just a few miles down the Overseas Highway.
What to Do in Key Largo by RV: Five Must-Experience Activities
John Pennekamp Coral Reef State Park — Reef Tours. The first undersea state park in the US (1963, MM 102.5) encompasses 70 nautical miles of Atlantic reef and 2,350 acres of land and mangrove. Three boat tour options depart the Pennekamp marina daily: glass-bottom boat tours ($32/adult, 2.5 hours, no getting wet) are the most accessible — the boat's glass panels display the reef 5–10 feet below the hull, with parrotfish, sea turtles, and brain coral visible clearly. Snorkel tours ($30/adult, 2.5 hours) access the shallow reef at 5–20 feet — equipment included. Scuba tours ($72+/adult, 3+ hours) reach the Molasses Reef and Elbow Reef dive sites at 20–40 feet depth — Molasses Reef is consistently ranked one of the top 10 dive sites in North America. The Pennekamp campground (47 sites) books 11 months ahead on reserveamerica.com for peak season; same-week availability is rare December–March.
Christ of the Deep Dive Site (25 Feet Deep, Near Pennekamp). The Christ of the Deep is a 9-foot bronze replica of the Genoa, Italy original — submerged at 25 feet depth in the Key Largo Dry Rocks reef area within Pennekamp State Park. The statue was installed in 1965 and is the most-photographed dive site in Florida. Snorkelers can see the statue clearly from the surface in calm conditions (it's in 25 feet of water — snorkeling from the surface provides a clear top-down view). Scuba divers can descend to the statue level for close-up access. The surrounding reef hosts queen angelfish, French grunt, yellowtail snapper, and frequently sea turtles. All Pennekamp tour operators include Christ of the Deep on their route.
Crocodile Lake National Wildlife Refuge (MM 106.5, Free). Crocodile Lake NWR protects the largest remaining US population of American crocodiles — approximately 500–600 individuals. The American crocodile (Crocodylus acutus) is a separate species from the American alligator; it's larger (up to 14 feet), more aggressive, and found in saltwater environments. The refuge is open for limited access — CR-905 through the northern key provides views of crocodile habitat, though sightings require patience and local knowledge. The refuge office (when staffed) provides current sighting locations. Best morning light viewing at dawn from the Card Sound Road causeway.
African Queen Canal Cruise (MM 100, Holiday Inn Docks). The actual vessel used in the 1951 John Huston film "The African Queen" (starring Humphrey Bogart and Katharine Hepburn, Academy Award winner for Best Picture) operates 1-hour narrated canal tours from the Holiday Inn Key Largo docks at MM 100. Tickets $49/adult; tours depart daily at 11am and 2pm. The 47-foot steam-powered boat is in full operating condition — maintained by the current owner as a working vessel. The film story (two strangers navigate a river through Africa during World War I) is loosely tied to Key Largo through the Bogart connection established by the 1948 film. For history enthusiasts, riding a living piece of Hollywood history in a Florida mangrove canal is genuinely unusual.
Kayaking the John Pennekamp Mangrove Trails. Pennekamp State Park's two canoe/kayak trails wind through the mangrove ecosystem adjacent to the coral reef: the Mangrove Trail (2 miles, marked, manageable for beginners) and the Wild Tamarind Trail (1 mile, shorter loop). Kayak rentals inside the park run $12/hour (single) or $17/hour (double). Sunrise paddling — arriving at the park's 8am opening and launching immediately — provides the best light and quiet conditions before tour boat traffic builds. Manatees use the mangrove channels seasonally (November–March); roseate spoonbills and great blue herons are year-round residents. For camping options beyond the Keys, the full Florida RV parks guide covers the entire state.
Practical Tips for RVing in Key Largo
Weekend Traffic from Miami Is Severe. Key Largo is 55 miles from Miami via US-1 — 60–90 minutes on a weekday, 2–4 hours on winter weekends when South Florida residents make day-trips to the Keys. US-1 through Key Largo has no passing lanes and frequent traffic signals. Enter on Friday before noon or Saturday after 4pm to avoid the worst weekend flow. Departing Sunday before 11am or after 5pm similarly avoids the southbound crowd returning to Miami. The FL511 app shows real-time Keys traffic.
Book Pennekamp Tours in Advance. Glass-bottom boat and snorkel tours from Pennekamp book out 1–2 weeks ahead for December–March and sell out completely on holiday weekends. Book at pennekampstatepark.com at least a week ahead for winter visits. Morning tours (9am departure) have better water clarity and calmer seas than afternoon tours. The 2.5-hour snorkel tour is the best value for first-time reef visitors.
Sunscreen Reef Safety. Chemical sunscreens (oxybenzone, octinoxate) are banned in Monroe County — illegal to apply in the water or on the beach before entering. These chemicals bleach coral and disrupt marine reproduction. Reef-safe mineral sunscreen (zinc oxide or titanium dioxide) is available at all Pennekamp dive shops and Key Largo dive operators. Pack it before you come or purchase locally — standard brands are not sold near the water.
Dive Certification and Rental. Multiple dive shops on Key Largo's US-1 strip offer Open Water certification ($300–450, 3–4 days), referral dives (if you've done classroom/pool work elsewhere, $100–150), and equipment rental ($45–65/day full kit). Conch Republic Divers, Rainbow Reef, and Silent World Dive Center are established operators. If you're certified, Key Largo is an excellent place to dive — the reef is relatively shallow (20–40 feet average), visibility is excellent, and conditions are beginner-friendly compared to drift diving in other Keys areas.
American Crocodile vs. Alligator. Both species occur in Key Largo. American crocodiles (Crocodile Lake NWR, saltwater) grow up to 14 feet and are brownish-gray with a narrow, triangular snout. American alligators (freshwater retention areas, ponds) are darker and have a broader, rounded snout. Crocodiles are generally shyer than alligators but are more dangerous if cornered near nesting areas. Never approach either species. The Key Largo area is one of the only places in the world where both wild crocodilian species coexist in the same geography. Travelers heading south will find equally rich wildlife habitat at Marathon RV parks in the Middle Keys.
Cost Math: Key Largo RV vs. Upper Keys Resort (3 Nights, Peak Season)
| Accommodation | Nightly Rate | 3-Night Total |
|---|---|---|
| John Pennekamp State Park (full hookup) | $35 | $105 |
| Key Largo Kampground (full hookup) | $90 | $270 |
| Budget US-1 motel Key Largo | $170 | $510 |
| Kona Kai Resort (waterfront Key Largo) | $420 | $1,260 |
| Sunset Cove Resort (beachfront) | $350 | $1,050 |
| Glunz Ocean Beach Hotel (oceanview) | $280 | $840 |
| Hawks Cay Resort (nearby Islamorada) | $400 | $1,200 |
| Caribbean Club (waterfront MM 97) | $280 | $840 |
Savings vs. budget motel: $240–405 over 3 nights. John Pennekamp's 47-site campground at $35/night puts you inside a state park on the reef — literally walking distance from the dive/snorkel tour departure docks. The hotel that matches this proximity would cost $350+/night. For reef-focused travelers, Pennekamp camping is not just economical; it's logistically superior.
Key Largo RV Parks: At a Glance
| Park Name | Location | Full Hookups | Pull-Thru | Nightly Rate | Pets | Wi-Fi |
|---|---|---|---|---|---|---|
| John Pennekamp Coral Reef SP | MM 102.5 | Yes | No | $28–43 | Yes | No |
| Key Largo Kampground | MM 101.5 | Yes | Yes | $65–110 | Yes | Yes |
| America Outdoors | MM 97.5 | Yes | Yes | $70–100 | Yes | Yes |
| Calusa Camp Resort | MM 101.5 | Yes | Yes | $75–110 | Yes | Yes |
| Gilbert's Resort | MM 107.9 | Yes | Yes | $80–120 | Yes | Yes |
| Long Key State Park MM 67.5 | Yes | No | $28–43 | Yes | No | |
| Fiesta Key RV Resort | MM 70 | Yes | Yes | $80–130 | Yes | Yes |
| Tavernier Hotel & RV Park | MM 91.8 | Yes | Yes | $65–90 | Yes | Yes |
Frequently Asked Questions
What is John Pennekamp Coral Reef State Park? John Pennekamp (MM 102.5) was the first undersea state park designated in the United States, established in 1963 through the advocacy of Miami Herald editor John D. Pennekamp. The park covers 70 nautical miles of Atlantic reef — part of the Florida Keys National Marine Sanctuary, the only living coral barrier reef in North America. Three tour types depart daily: glass-bottom boats ($32/adult), snorkel tours ($30/adult), and scuba dives ($72+). The Christ of the Deep bronze statue (9 feet tall, submerged at 25 feet) is the signature dive site.
What is the Christ of the Deep statue? The Christ of the Deep is a 9-foot bronze statue submerged at 25 feet depth in the Key Largo Dry Rocks reef within Pennekamp State Park. Installed in 1965, it's a replica of the "Christ of the Abyss" statue in the Mediterranean off Genoa, Italy. The surrounding reef holds abundant marine life. Snorkelers can see it from the surface; scuba divers can approach at statue level. It's the most photographed dive site in Florida and one of the most recognized underwater landmarks in North America.
What is the African Queen in Key Largo? The African Queen is the actual steam-powered vessel used in the 1951 John Huston film of the same name, starring Humphrey Bogart and Katharine Hepburn. The film won Bogart his only Academy Award. The boat (47 feet long, wood-hulled, coal-fired steam engine) now operates 1-hour canal tours from the Holiday Inn Key Largo docks at MM 100. Tickets are $49/adult; tours run at 11am and 2pm daily. The boat is fully operational and maintained as a working vessel.
Are there American crocodiles in Key Largo? Yes. Crocodile Lake National Wildlife Refuge (MM 106.5) protects the largest remaining US population of American crocodiles — approximately 500–600 individuals. American crocodiles (distinct from alligators — saltwater habitat, narrow snout, brownish-gray color) can reach 14 feet. The refuge limits public access to protect nesting areas, but CR-905 through north Key Largo provides viewing opportunities from the road. Key Largo is one of the only places in the world where wild American crocodiles and American alligators coexist.
How far is Key Largo from Miami? Key Largo's northern tip (MM 106) is 55 miles from Miami via US-1 — typically 60–75 minutes on weekdays, 2–4 hours on peak-season weekends (December–March) when South Florida residents make Keys day trips. Key Largo is the closest Keys destination from Miami International Airport and Fort Lauderdale. The Florida Turnpike Extension south to Florida City, then US-1 south, is the standard routing.
Can I rent a kayak in Key Largo? Yes. Kayak rentals are available inside John Pennekamp State Park ($12/hour single, $17/hour double) and from multiple outfitters on US-1. The Pennekamp Mangrove Trail (2 miles, marked) and Wild Tamarind Trail (1 mile) are the recommended routes for beginners. Manatees use the mangrove channels November–March. Sunrise launching (8am park opening) provides the best conditions before boat traffic builds.
What are the best dive sites near Key Largo? Molasses Reef (20–35 feet, 6 miles offshore) is consistently ranked a top-10 North American dive site — spur-and-groove coral formations, abundant fish life, regular sea turtle encounters. The Elbow Reef (20–40 feet) has two intact shipwrecks visible from a single dive. Christ of the Deep (25 feet, Pennekamp) is the most photographed. Benwood Wreck (45–55 feet) is a WWII-era freighter with photogenic fish populations. All are accessible through Key Largo dive operators.
What is Crocodile Lake National Wildlife Refuge? Crocodile Lake NWR (MM 106.5) is a 6,700-acre federal refuge protecting the most critical US habitat for American crocodiles. The refuge includes mangrove, tropical hardwood hammock, and the freshwater/saltwater transition zones crocodiles require. Limited public access via CR-905 and trail; the refuge office provides guidance on current viewing conditions. The refuge also protects Key Largo woodrats and Key Largo cotton mice — endemic mammal species found nowhere else on Earth.
Is Key Largo good for snorkeling without a dive boat? Shore snorkeling is more limited in Key Largo than in other reef destinations — the shallow reef is accessible primarily by boat. John Pennekamp's beach has a short swim-able area, but the reef system itself requires a boat trip (minimum 3–5 miles offshore). The glass-bottom boat tour ($32/adult) provides reef viewing without getting wet. For in-water reef access without scuba, the snorkel tour ($30/adult) is the recommended option for visitors who can't or won't book a private charter.
What is the best month to visit Key Largo? January through March offers ideal conditions: water temperature 72–76°F (clear, comfortable for snorkeling), air temperature 68–78°F, minimal humidity, no no-see-ums. January is the best month for reef clarity after winter cold fronts flush the water. December is nearly as good and slightly less crowded than January. Avoid Thanksgiving week and Presidents' Day weekend — peak traffic from South Florida turns a 90-minute drive into a 4-hour ordeal.
Thinking About Selling Your RV Park in Key Largo?
Key Largo RV parks benefit from a dynamic that most campground markets can't match: proximity to Miami's 6-million-person metro area, a world-class natural attraction in Pennekamp, and the complete absence of new competition due to Monroe County's development restrictions. Weekend demand from South Florida is structural — it doesn't disappear in economic downturns the way discretionary vacation demand in other markets does.
Parks within walking distance of Pennekamp are positioned at the front door of the US's most-visited undersea park. That's a location story that institutional buyers understand and pay for. Cap rates in the Upper Keys run 8–11% for established, well-maintained parks.
If you own an RV park in Key Largo or the Upper Keys and are ready to explore your options, reach out directly. Contact Jenna Reed at jenna@rv-parks.org or visit /sell for a private conversation about your property.