Miami to Key West in an Exotic Car: The Ultimate Overseas Highway Road Trip Guide

There are road trips, and then there's the Overseas Highway. US Route 1 from Miami to Key West is 113 miles of driving that feels like flying — open ocean on both sides, the Seven Mile Bridge stretching to the horizon, and that specific shade of turquoise water that only exists in the Florida Keys. It's arguably the most photogenic drive in America, and doing it in an exotic car turns a great trip into an unforgettable one.

But it's not without its quirks. Speed traps, low-clearance bridges, nowhere to turn around for 20 miles at a stretch, and that one gas station in Marathon that charges $7.50 a gallon for premium. Here's everything you need to know before you point your Porsche south.

The Route at a Glance

Segment	Miles	Time (No Stops)	Highlights
Miami → Key Largo	60 mi	1 hr 15 min	Florida Turnpike to US-1, mangroves, Jewfish Creek Bridge
Key Largo → Islamorada	18 mi	25 min	Dive capital, tiki bars, first ocean views
Islamorada → Marathon	23 mi	35 min	Long Key State Park, Channel Five Bridge
Marathon → Big Pine Key	13 mi	20 min	Seven Mile Bridge (the main event)
Big Pine Key → Key West	29 mi	40 min	Key deer habitat, Sugarloaf, Boca Chica
Total	~113 mi	~3 hrs 15 min	Plan 5-6 hours with stops

When to Go

Best months: Late October through April. The weather is drier, the humidity is manageable, and the light is incredible — especially the golden hour coming back northbound with the sun setting behind you.

Best day: Tuesday through Thursday. Weekends and Monday holidays pack the highway with RVs, boat trailers, and tourists doing 45 in a 55. Midweek, the road opens up.

Best time to leave Miami: 7:00 AM. You'll beat the traffic through Homestead, arrive in Key Largo by 8:15, and have the highway mostly to yourself until Marathon. Coming back, leave Key West by 3:00 PM to catch sunset somewhere around Bahia Honda.

Exotic Car Considerations

Ground Clearance

The Overseas Highway itself is flat and well-paved — no issues there. The problems start when you pull off for gas, food, or photos. Many Keys gas stations, restaurant parking lots, and side streets have steep driveway lips, gravel patches, and unpaved shoulders. If you're driving anything with less than 4 inches of clearance (Ferrari 488, McLaren 720S, Lamborghini Huracán lowered on coilovers), use nose-lift mode liberally and scout parking entries before committing.

Fuel Planning

Location	Last Reliable Premium Gas Before	Notes
Leaving Miami	Florida City (Turnpike exit)	Fill up here — cheapest gas on the route
Key Largo	Mile Marker 100 Shell station	Fair prices, easy access
Marathon	Mile Marker 50 area, multiple stations	Last major town before the long stretch
Key West	Stock Island (before KW proper)	Cheapest in Key West area

Most exotics will make the 113-mile run on a full tank, but don't push it. If your Ferrari gets 14 MPG in spirited driving and has a 21-gallon tank, that's only 294 miles of range — fine for the round trip, but not with a margin you'd want to bet on.

Speed Traps

The Florida Keys have some of the most aggressive speed enforcement in the state. Monroe County Sheriff's deputies and Florida Highway Patrol sit in the mangroves at predictable spots:

• Mile Marker 90-95 (Key Largo): Speed drops from 55 to 45. They're waiting.
• Mile Marker 74-77 (Lower Matecumbe): Construction zones with doubled fines.
• Mile Marker 47-50 (Marathon): School zones and town speed limits.
• Seven Mile Bridge: Yes, it's tempting. No, don't floor it. There's literally nowhere to hide and they patrol it constantly.

A speeding ticket in Monroe County starts at $279 for 10 over. In a construction zone, it doubles. In an exotic car with out-of-county plates, you will get pulled over for doing 5 over — deputies know the car is worth more than their annual salary and they're not impressed.

The Must-Stop Itinerary

Stop 1: Alabama Jack's (Mile Marker 106)

Technically in Card Sound, not the Keys. This floating bar on the water is a Keys institution — cash only, cold beer, live music on weekends, and a gravel parking lot that will test your commitment to the road trip. Park on the paved section near the road. The smoked fish dip is legendary.

Stop 2: Islamorada (Mile Marker 80-84)

The "Sport Fishing Capital of the World" has the first proper ocean views and some of the best photo ops. Pull into Robbie's Marina to feed the tarpon (seriously, the 100-pound fish eating out of your hand is a core Keys experience) and grab lunch at the Hungry Tarpon next door.

Stop 3: Bahia Honda State Park (Mile Marker 37)

This is the postcard. The old Bahia Honda Bridge frames impossibly blue water, and the beach is consistently rated as one of the best in the US. The parking lot is paved and flat — safe for low cars. Spend 30 minutes here minimum. This is where your car's Instagram moment lives.

Stop 4: Seven Mile Bridge (Mile Marker 40-47)

You can't stop on the bridge itself (and shouldn't try), but the experience of driving across seven miles of open ocean is the emotional peak of the trip. Keep your windows down. The old bridge runs parallel and is now a pedestrian path — you can walk out on it from the Marathon side for photos of your car on the new bridge.

Stop 5: Key West (Mile Marker 0)

You made it. Parking in Key West is a nightmare for any car, let alone an exotic. Your best options:

Parking Option	Location	Cost	Exotic-Friendly?
Mallory Square Garage	Wall St & Whitehead	$4/hr, $32 max	Yes — covered, gated, cameras
Caroline Street Garage	Caroline & Grinnell	$4/hr, $32 max	Yes — tight turns but covered
Old Town Garage	Grinnell St	$4/hr	Decent — multi-level, covered
Valet at Ocean Key Resort	Zero Duval Street	$40-50	Best option — they handle exotics regularly

The Return Trip: Make It Different

Don't just reverse the route. The northbound drive has a completely different character — you're watching the sun set over the Gulf side, and the light paints the bridges gold. A few tweaks for the return:

Leave by 3:00 PM to catch sunset over the water around Mile Marker 37-50. Pull over at Bahia Honda or the rest area on the Marathon side of Seven Mile Bridge.

Dinner in Islamorada. Morada Bay Beach Cafe has waterfront dining and a chill vibe that's perfect for the drive home. Or go full local at Lorelei Restaurant & Cabana Bar for sunset views.

Take Card Sound Road. Instead of US-1 back through Key Largo, take Card Sound Road (SR 905A) north. It's a narrow two-lane through the mangroves with zero traffic, a tolled bridge with stunning views, and it dumps you out near Homestead. This is the local's route and it's dramatically more interesting than the main highway.

What to Bring

• Sunscreen (you will burn through the windshield on this drive)
• Cash for Alabama Jack's and some roadside stands
• A full phone charge — cell service is spotty between Marathon and Big Pine Key
• A microfiber cloth — the salt spray is real and your paint will thank you
• Sunglasses (polarized, the water glare is blinding)

The Bottom Line

The Miami-to-Key-West run is one of those drives that justifies owning a beautiful car. It's not about speed — you'll rarely top 55 MPH. It's about the experience: ocean on both sides, bridges that feel like runways, and that moment on Seven Mile Bridge where the road, the water, and the sky merge into something that doesn't feel real.

Do it once and you'll understand why people move to South Florida. Do it in an exotic and you'll understand why they buy the car.