The Florida Keys are best understood as a road trip across a chain of islands, not as one destination called Key West. From Key Largo to Islamorada, Marathon, the Lower Keys and Key West, the scenery, accommodation style and reason to stop keep changing. The Overseas Highway is only about 113 miles from Key Largo toward Key West, but a good trip can easily take four or five days because the road is the experience.
This guide explains where to base yourself, how many days you need, what to stop for, and when Key West should—or should not—dominate the trip. For the wider state itinerary, see our Florida Travel Guide.
- 1Day 1: Miami → Key Largo; water or mangrove activity
- 2Day 2: Key Largo/Islamorada; reef, fishing, paddling or relaxed island day
- 3Day 3: Drive via Marathon and Lower Keys to Key West with several long stops
- 4Day 4: Full Key West day
- 5Day 5: Dry Tortugas if pre-booked, or another Key West/water day
Florida Keys at a glance
| Area | Best for | Suggested stay |
|---|---|---|
| Key Largo | Reef, snorkeling/diving, easy first Keys stop | 1–2 nights |
| Islamorada | Fishing culture, dining, relaxed Upper Keys | 1–2 nights |
| Marathon | Families, central location, practical base | 1–2 nights |
| Lower Keys | Nature, quieter atmosphere | 1–2 nights |
| Key West | History, walkability, nightlife, Dry Tortugas access | 2–3 nights |
How many days do you need?
Three nights is the minimum for a meaningful Keys trip if you are driving from Miami: one Upper/Middle Keys stop and two nights in Key West. Four or five nights is far better because it allows a water day, a slow driving day and a full Key West day without turning every meal into a schedule problem.
A one-day Miami–Key West round trip is possible but rarely ideal. You will spend a large share of the day in a vehicle and see the islands as scenery through a window rather than as places to experience.
Key Largo: start with the underwater Keys
Key Largo is a natural first stop from Miami and one of the strongest areas for reef-focused excursions. John Pennekamp Coral Reef State Park is frequently described as the country’s first undersea park and offers ways to experience mangroves and marine environments through snorkeling, diving, paddling and glass-bottom boat trips.
If water activities are a major priority, sleep here rather than planning an early drive from Miami. Weather and marine conditions can affect outings, and an extra night provides flexibility.
Islamorada: slow down
Islamorada is associated with fishing, waterfront dining, galleries and a lower-key resort atmosphere. It is a good place for travelers who want the Keys feeling without immediately plunging into Key West crowds. Sunset dinners and half-day water trips fit naturally here.
Marathon: the practical middle
Marathon is geographically useful and family-friendly, with accommodation options and access to both Upper and Lower Keys experiences. It works well if you want fewer hotel changes or if Key West prices are high. The Seven Mile Bridge area becomes one of the visual highlights as you continue south.
The Lower Keys: protect the quiet
The Lower Keys are where the road trip begins to feel less developed again. Nature, water and slower island life matter more than a dense attraction list. Wildlife rules are important; do not feed animals or treat roadside sightings as invitations to approach.
Key West: a small city at the end of the road
Key West is walkable, historic, social and much denser than the rest of the Keys. Old Town, Duval Street, waterfront areas, museums, architecture and sunset culture can fill two days without a car. Once you park, walking or cycling is often easier than moving the vehicle repeatedly.
What is actually worth doing in Key West?
- Walk Old Town early before the busiest hours.
- Choose one or two historic sites rather than every museum.
- Spend time on the waterfront and notice the Bahamian/Cuban influences in local history.
- Plan sunset deliberately but do not assume Mallory Square is the only viewpoint.
- Eat seafood and Key lime pie, but also look beyond the most tourist-focused blocks.
Dry Tortugas National Park: treat it as a major excursion
Dry Tortugas National Park sits about 70 miles west of Key West and has no road access. The National Park Service states that visitors reach Garden Key and Fort Jefferson by ferry, seaplane, private boat or permitted charter. Ferry and seaplane capacity is limited, so reserve early if this is a must-do.
A ferry day includes significant travel time and several hours at the park. Seaplane options are faster but priced differently. Weather can affect both. Do not schedule your Key West checkout and a long mainland drive immediately after the excursion.
Driving the Overseas Highway: what surprises first-timers
The mileage looks short, but the road is largely two lanes and passes through communities with lower speed limits. Traffic incidents can create delays because there are few alternative routes. Build stops into the plan and avoid booking a fixed-time Key West activity too close to your Miami departure.
Best stops between Key Largo and Key West
Rather than chasing every roadside landmark, choose stops that create variety: a reef or mangrove experience in Key Largo, lunch or galleries in Islamorada, a nature/family stop around Marathon, bridge views, then a Lower Keys stop before Key West. The drive becomes memorable because the landscape changes around you.
Do you need a car in the Keys?
Yes for the island chain road trip. No for central Key West once you have arrived. If your entire vacation is Key West and you are flying directly there, a rental car may be unnecessary. If you are coming from Miami and want the Upper/Middle Keys, the car is part of the experience.
Where to stay: one base or split stay?
Compare available accommodation for your dates, budget and preferred location before you finalize your route.
A split stay is best for most first trips: Upper/Middle Keys plus Key West. A single Key West base is better if nightlife, history and Dry Tortugas are the dominant priorities. A single Marathon base can work for families who want central positioning and are willing to drive to Key West for a day.
Compare accommodation: compare hotels and other stays on Booking.com.
Best time to visit the Florida Keys
Winter and spring are popular for comfortable weather and escape-from-cold demand. Summer is hot, humid and water-oriented. The Atlantic hurricane season runs June through November, with risk varying through the period. If traveling in late summer or fall, protect booking flexibility and monitor official forecasts.
Snorkeling and diving: do not overpromise visibility
Water conditions change. Wind, waves and recent weather can affect visibility and boat operations. Book with reputable operators and keep a backup island activity. The best reef day is the day conditions support it, not necessarily the day your spreadsheet assigned weeks earlier.
Florida Keys with children
The Keys can work very well for families, especially with marine-life experiences, paddling and slower pool/beach days. Marathon is particularly practical. The challenge is sun exposure and long car time; break the Overseas Highway into real stops rather than asking children to “hold on until Key West.”
Food: what to look for
Local menus often revolve around fish, shrimp, stone crab in season and Key lime desserts, but the Keys also reflect Caribbean and Cuban connections. Ask what is local and current rather than assuming every “Keys” menu is equally regional.
A 5-day Florida Keys itinerary
- Day 1: Miami → Key Largo; water or mangrove activity.
- Day 2: Key Largo/Islamorada; reef, fishing, paddling or relaxed island day.
- Day 3: Drive via Marathon and Lower Keys to Key West with several long stops.
- Day 4: Full Key West day.
- Day 5: Dry Tortugas if pre-booked, or another Key West/water day.
Common mistakes
- Driving Miami to Key West and back in one day.
- Booking every night on a different island.
- Assuming Key West has the best reef access for every activity.
- Treating hurricane season as either “perfectly safe” or “never travel”—flexibility is the real issue.
- Leaving Dry Tortugas transport until the last minute.
- Planning a tight airport connection after a long Overseas Highway drive.
The extra information most guides miss
The Keys are not primarily about beaches in the way many first-time visitors expect. They are about water access, bridges, mangroves, reefs, boating, fishing history and island communities. If your dream is a wide, endless resort beach, another part of Florida may fit better. If your dream is a road suspended between Atlantic and Gulf waters with stops that feel progressively farther from the mainland, the Keys are hard to replace.
Useful official resources
- Florida Keys & Key West official site
- VISIT FLORIDA — Florida Keys road trip
- Dry Tortugas National Park — directions
- Dry Tortugas National Park — guided tours
Combine the islands with Miami using the Miami Travel Guide or place them inside the two-week Florida road trip.
Fuel, supplies and the “single-road” reality
The Overseas Highway is the spine of the Keys. Because most islands depend on the same route, a crash or road closure can create delays with few alternatives. Keep the fuel tank comfortably above empty, carry water and do not build an airport day around a perfect no-delay drive from Key West to Miami.
Grocery and pharmacy options exist along the island chain, but selection varies. Families and travelers with dietary needs can make the trip easier by buying essential snacks or specialty items before the longest island stretches.
Responsible wildlife and reef travel
Coral reefs, mangroves, seagrass beds and wildlife are the reason many people visit the Keys. Choose operators that explain reef etiquette, avoid touching coral, follow sanctuary rules and give animals space. Sunscreen choices, anchoring behavior and fishing regulations can affect sensitive environments, so follow current local and federal guidance rather than old travel-forum advice.
What if the weather ruins your water day?
Keep a land-based list for each base: galleries and food stops in Islamorada, family attractions around Marathon, museums and historic sites in Key West. The Keys are far more enjoyable when the itinerary can move a boat day by 24 hours instead of treating one windy morning as a failed vacation.
Continue to Key West
For the final island, use our Key West Travel Guide. Driving from South Florida? The Miami to Key West road trip explains the best stops and realistic pacing.