The route
| 🗺️ | Miami → Key West: ~160 miles, 3.5–4 hours each way on US-1, the Overseas Highway |
| 🌉 | The star: Seven Mile Bridge at Marathon — open water 360° around you |
| 🏝️ | Key stops: Key Largo (mile 100), Islamorada, Marathon, Big Pine Key (watch for Key deer), Key West (mile 0) |
| ⏱️ | Speed limits 45–55 mph most of the way — perfect open-air cruising speed in a Slingshot |
Which rental package
Round trip driving alone is 7–8 hours. With stops, photos and lunch in Key West, plan a full day. The 12-hour rental ($265) works if you leave at 8 AM sharp; the 24-hour ($300) removes all pressure — and for four people the 4-seater at $400/8h splits to $100 each.
Unlimited miles are included on every rental — Key West is 100% allowed.
Fuel & practical tips
| ⛽ | Range is 250–280 miles per tank — fill up in Marathon (mile 50) on the way down to be safe |
| ⛽ | The Slingshot needs premium gas (93 octane) — all major Keys stations carry it; see our gas guide |
| 🧴 | No roof: sunscreen, sunglasses and a hat are mandatory equipment |
| 🌦️ | Check radar before Seven Mile Bridge — summer squalls pass fast; our rain guide covers what to do |
| 🅿️ | Key West: park at Mallory Square garage or street meters — the Slingshot fits small spots |
Miami to Key West — FAQ
Can you drive a rental Slingshot from Miami to Key West?
Yes — every rental includes unlimited miles, and Key West is the single most popular long ride our customers take. The 12-hour or 24-hour package fits it best.
How long does Miami to Key West take in a Slingshot?
About 3.5–4 hours each way for the 160-mile run down US-1. With stops and time in Key West, plan 10–12 hours round trip or make it an overnight with a 24-hour rental.
Do you need to refuel on the way to Key West?
At least once. The Slingshot's range is roughly 250–280 miles per tank, and the round trip is 320 miles — top up with 93 octane in Marathon on the way down.
Is the Seven Mile Bridge scary in a Slingshot?
It's the highlight, not the hazard — a wide modern highway bridge with a 55 mph limit. The open cockpit makes it feel like flying over the ocean.
What's the best time to leave Miami for Key West?
By 8–9 AM. You'll beat the traffic out of Miami, cross the bridges in morning light, and have the whole afternoon in Key West before an easy sunset drive back.