This is the demanding transfer day: from Tallahassee to Key Largo, plan on roughly 10–11 hours door-to-door via I-10, I-75, I-95, Florida’s Turnpike, and US-1, plus fuel, food, and rest stops. Since the itinerary mentions leaving Thursday night, use a designated driver and confirm your Key Largo lodging will accept a very late arrival; if everyone is tired, an overnight stop en route is the safer choice. Once you reach Key Largo, expect slower traffic on US-1 and limited parking at busy waterfront businesses, so keep luggage out of sight and allow time to check in before sightseeing.
After a break, head to John Pennekamp Coral Reef State Park for two to three hours. A glass-bottom-boat tour or kayak outing is the best use of your time, while the short coastal paths work well if you arrive too late for a boat. Boat and kayak availability depends on weather and should be reserved ahead; park admission and tours are separate charges, with a realistic group budget of roughly $75–$180 depending on the activity. If you still have daylight afterward, take the easy trails at Key Largo Hammock Botanical State Park for about an hour—wear mosquito repellent, bring water, and check same-day trail and park hours before driving over.
Have a relaxed meal at Mrs. Mac’s Kitchen, allowing about an hour and approximately $20–$35 per person. It is casual and popular, so a short wait is possible during the dinner rush. If energy holds, drive north on US-1 for about 25–30 minutes to Florida Keys Brewing Co. in Islamorada for a one-hour local beer stop; budget $15–$25 per person, and designate a sober driver. Afterward, return to Key Largo rather than adding more sightseeing—the long approach from Tallahassee makes an early night worthwhile, especially if tomorrow includes the drive through the Middle Keys.
Start at Robbie’s of Islamorada around 8:30–9:00 AM when the docks are generally calmer and the heat is manageable. Allow about two hours to feed the tarpon, browse the small waterfront market, and enjoy the marina atmosphere. Tarpon-feeding admission is inexpensive, but boat excursions cost considerably more and should be reserved in advance; departures also depend on weather. Wear sun protection and shoes suitable for wet dock surfaces.
From Robbie’s, it’s a short drive along US-1 to Morada Bay Beach Café for a relaxed brunch or early lunch. Expect roughly $25–45 per person, plus drinks and gratuity, and allow 1–1½ hours. The colorful waterfront setting is the main draw, so don’t rush the meal—but keep an eye on the clock if you have a timed afternoon reservation.
After lunch, spend about an hour at Windley Key Fossil Reef Geological State Park, where short trails pass through old coral-quarry cuts and interpretive displays. Check the park’s current May hours before leaving; state-park admission is typically modest, and comfortable walking shoes are useful. Leave Islamorada around 1:30–2:00 PM for the drive to Marathon, allowing up to 1¾ hours with Keys traffic and brief photo delays.
Your key timing dependency is the scheduled guided tour at The Turtle Hospital. Reserve a tour ahead—capacity is limited—and arrive about 15 minutes early; plan roughly 1½ hours on site. Tours explain the hospital’s rescue and rehabilitation work and are more structured than a drop-in museum visit, so a late arrival may mean waiting for the next available slot.
After the Turtle Hospital, drive west toward Seven Mile Bridge for a 45-minute sunset stop. The old bridge overlook near Knight’s Key is the practical place to pause; parking is limited, so be considerate and never stop on the bridge shoulder. Sunset in May is usually around 8:00 PM, but check the exact time and allow enough margin to reach your Marathon lodging afterward. Bring water and a light layer—the breeze can pick up over the water.
Leave Marathon around 6:30–7:00 AM and follow US-1 south toward Big Pine Key; the drive is usually about 35–45 minutes. Start at Bahia Honda State Park near opening, since its limited parking can fill on busy weekends. Spend about two hours swimming, walking around the old bridge area, and enjoying the beach before the strongest midday heat. The park charges an entrance fee per vehicle—typically around $8 for a private vehicle, though 2027 rates and capacity rules should be checked closer to the trip.
From Bahia Honda State Park, drive roughly 15 minutes to Blue Hole on Key Deer Boulevard. Allow 30–45 minutes for the short wildlife-viewing stop; alligators, turtles, fish, and birds are possible, but sightings are never guaranteed. Keep food and drinks secured, stay on marked paths, and drive slowly through Big Pine Key, where endangered Key deer often cross the road.
Continue to Key West, allowing about 45 minutes to an hour from Blue Hole, plus time to find parking. A paid garage or reserved space is worth considering because Old Town street parking is scarce and time-limited. Visit the Key West Butterfly and Nature Conservatory first, where an hour is enough to see the tropical gardens, butterflies, and birds; check the 2027 opening hours and ticket price before going, as hours can change seasonally.
Walk from there through Old Town to the Ernest Hemingway Home & Museum, generally a few minutes away. Set aside 60–90 minutes for the house, gardens, and famous six-toed cats. Admission and entry procedures can vary, so verify same-day availability or book ahead if online reservations are offered; this is one stop where a late arrival may mean waiting for the next available tour.
Head toward Mallory Square about an hour before sunset to find a good waterfront position and enjoy the performers, street artists, and harbor views. Sunset times in May are around 8:00 PM, but arrive earlier if you want room near the seawall. Afterward, walk about 15 minutes through Bahama Village to Blue Heaven for dinner. Its open-air setting, seafood, and generous portions make it a fitting final meal in Key West; budget roughly $30–50 per person, and expect a wait because reservations may be limited or unavailable. For a Sunday evening, confirm the restaurant’s current hours and allow extra time before the drive back to Marathon.
Plan to leave Key West around 6:00–7:00 AM after refueling, packing food, and using the restroom. The drive to Tallahassee is roughly 10–11 hours door-to-door, depending on US-1 bridge traffic, stops, and congestion around South Florida. Follow US-1 north through the Keys, then connect with Florida’s Turnpike and I-10; a navigation app is useful for checking incidents before committing to the Turnpike or alternate routes. For three travelers, budget approximately $90–$140 for fuel, plus meals and tolls. Build in two or three short breaks rather than trying to drive straight through.
Keep the day deliberately simple: grab breakfast before departure or pack it, then plan a proper lunch somewhere around the Florida Turnpike corridor rather than waiting until everyone is tired. Save the final fuel stop for the Tallahassee approach, since services become less convenient during the last stretch on I-10. If you are flying from Tallahassee International Airport, allow time after returning the rental car or unloading luggage for airport access and security; confirm the airline’s required arrival time rather than assuming an evening flight will be easy to catch.
An evening arrival in Tallahassee is realistic only with an early start and light traffic. If the flight departs earlier than late evening, or if the group wants a more relaxed drive, an overnight en route—or changing to a later flight—is the safer choice. Otherwise, continue directly to the airport, return the vehicle with fuel receipts handy, and keep a little buffer for bridge delays, rain, and the long final leg from South Florida.
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