Key West to St. Simons Island: A Coastal Road Trip Guide

Did you know that the first 113 miles of this route, from Key West to Florida City, traverse 42 bridges over the turquoise waters of the Florida Keys? This legendary stretch of US-1, known as the Overseas Highway, is one of the most iconic drives in America. The journey from Key West, FL to St. Simons Island, GA spans approximately 600 miles and takes about 10–11 hours of pure driving time, but counting stops, plan for at least two full days.

The route follows US-1 north through the Keys, then joins I-95 near Fort Pierce for a straight shot up Florida’s east coast. The final leg involves a detour onto US-17 and GA-99 to reach St. Simons Island. This drive is not just a transfer; it's a curated experience through subtropical wetlands, historic coastal towns, and sandy barrier islands.

The primary route uses US-1, I-95, and US-17. Tolls are minimal except for the Florida Turnpike segment near Miami; an electronic transponder (SunPass) is useful but not required. Expect gas prices to rise as you approach the Keys; fill up in Florida City for better rates.

Best stops Key West, FL to St. Simons Island, GA include the Everglades, Fort Lauderdale Beach, and Savannah’s Historic District. How long to drive Key West, FL to St. Simons Island, GA? With minimal breaks, 10–11 hours, but plan for 2–3 days to enjoy stops. Is it worth driving Key West, FL to St. Simons Island, GA? Absolutely—the coastal scenery and cultural landmarks make it a memorable journey.

• Key fuel stops: Florida City (mile 113), Fort Pierce (mile 280), Daytona Beach (mile 380), Brunswick, GA (mile 590).
• Major road hazards: Wildlife in the Everglades (deer, alligators), sudden tropical rainstorms, and bridge congestion in Key Largo.
• Road quality: US-1 is well-maintained but narrow in parts; I-95 is smooth. GA-99 has occasional potholes.

For hidden stops, learn how to find the best stops and hidden gems between cities with Wayro’s local insight.

The drive showcases five distinct ecosystems: coral keys, mangrove estuaries, Atlantic beaches, maritime forests, and salt marshes. Things to do between Key West, FL and St. Simons Island, GA include visiting the Everglades National Park (airboat tours at Shark Valley), walking the Juno Beach pier, and exploring the Timucuan Preserve near Jacksonville. The route also passes two UNESCO World Heritage Sites: Everglades National Park and the historic district of St. Augustine (a Monumento Nacional Heritage site).

Climatic conditions vary: from Key West’s tropical savanna (year-round humidity, 85°F avg) to Georgia’s humid subtropical (mild winters, hot summers). The best travel months are March–May and October–November for lower humidity and fewer tourists. Route aesthetics peak at sunrise over the Seven Mile Bridge and sunset from the St. Simons Island Pier.

Local commerce along the way includes Key lime shops in Key Largo, citrus stands in Fort Pierce, and shrimp boats in Brunswick. Culinary infrastructure ranges from Cuban cafecitos to Southern seafood shacks. Don't miss a conch fritter at Alabama Jack’s in Key Largo, and a Lowcountry boil at The Half Shell in Savannah.

Infrastructure safety is high on I-95 but moderate on rural roads like GA-99. Watch for flooding during summer storms. Family and child suitability is excellent: the route offers beaches, nature centers, and kid-friendly attractions like the Fort Lauderdale Children’s Museum and the St. Augustine Alligator Farm. Pet-friendly framework includes many pet-friendly hotels (La Quinta, Best Western) and rest stops with pet relief areas.

Fatigue management & rest zones: Plan for breaks every 2 hours. Recommended stops include the Miccosukee Rest Area (mile 40), Canova Beach Park (mile 300), and the Okefenokee Refuge Visitor Center (mile 550). Hidden off-route spots: the tiny town of Lake Placid, FL (caladium capital), and Jekyll Island’s driftwood beach. For the best experience, use how to find the best stops and hidden gems between cities to customize your journey.

1. Rest stop: Key Largo at mile 60 (Hammock State Park).
2. Rest stop: Fort Pierce at mile 280 (Heathcote Botanical Gardens).
3. Rest stop: Brunswick at mile 590 (Marshes of Glynn Overlook).