ONARC
For anyone typing "luxury car rental Miami to Key West" and wanting the real numbers before booking. The honest answer is arithmetic: how far the drive is, how many miles a rental includes, and what it costs when the trip runs past that. This guide works the math by rental length and by car, using only Monarc VIP's published fleet figures.
Quick answer: Brickell to Key West on the Overseas Highway (US-1) is roughly 160 miles each way, about 320 round trip. Monarc VIP includes 100 miles per day, rolling over unused days, so a 1-day rental falls far short, 3 days (300 miles) is about 20 short, and 4 days (400 miles) covers it with margin. Extra miles run $5 to $10 per mile depending on the car. Key West itself isn't a delivery location; pickup and delivery are arranged in Miami-Dade or Broward, confirmed on your quote.
How far is the drive from Miami to Key West, really?
From Brickell, the Overseas Highway (US-1) runs roughly 160 miles down through the Keys to Key West, so a there-and-back day is about 320 miles round trip. That's public road geography, not a Monarc VIP figure, and it shifts a little with your starting point. Either way, figure four hours or more each way in normal traffic.
Does Monarc VIP's included mileage cover a Key West round trip?
100 miles per day are included, and unused daily miles roll over from day to day within your rental; every mile beyond that is billed at the car's published per-mile rate. Set against the roughly 320-mile round trip, the answer comes down entirely to how many days you book, laid out below. Our mileage fees guide covers the same 100-mile daily allowance and per-mile rates across the rest of the fleet.
Which rental length actually covers the round trip?
The same math, laid out by rental length, with the shortfall priced on two fleet cars at their published per-mile rate.
| Rental length | Included miles | Round-trip shortfall | Extra miles on Porsche 911 Carrera S ($7/mi) | Extra miles on Corvette C8 ($5/mi) |
|---|---|---|---|---|
| 1 day | 100 miles | about 220 miles short | about $1,540 | about $1,100 |
| 3 days | 300 miles | about 20 miles short | about $140 | about $100 |
| 4 days | 400 miles | about 80 miles to spare | $0 extra | $0 extra |
A same-day round trip needs a lot of paid mileage on top; a 3-day rental is close enough that the extra cost is modest; a 4-day rental removes the question entirely. On the roughly 20-mile shortfall a 3-day rental leaves, the same math runs about $140 on the Rolls-Royce Dawn ($7 per mile) and about $200 on the Ferrari 488 ($10 per mile).
Roll your miles forward. Unused daily miles roll over within your rental, so miles saved running Miami errands on an earlier day carry into the Key West day, narrowing that roughly 20-mile shortfall.
What car fits four hours each way to Key West?
Four hours each way tests the cabin, not just the engine. A two-seat convertible keeps the wind in the conversation all drive long: fine for a scenic loop, tiring for a full day. The Rolls-Royce Dawn, the fleet's four-seat convertible, stays notably calmer with the top up. A sealed coupe like the Porsche 911 Carrera S trades the open-air moment for a quiet cabin at a lower day rate and per-mile rate, and the Corvette C8 goes lighter still on both, though its small front-and-rear trunks are worth checking against your bags. See the full lineup on our Luxury Car Rental Miami page.
Seven Mile Bridge or Card Sound Road?
The Seven Mile Bridge outside Marathon is the drive's signature stretch: open water on both sides, a steady 45-55 mph flow, no real shoulder, so save photos for a marked pull-off. Card Sound Road, near the start, is a quieter bypass around the Key Largo bottleneck that rejoins US-1 further south, with a cashless toll collected electronically and no cash lane. Either way, leave Miami early: the Upper Keys back up hard on weekend mornings.
Can Monarc VIP deliver the car to me in Key West?
Key West isn't a published delivery location, so we won't price one. Pickup or delivery is $100 each way on 1-2 day rentals when selected, and free on rentals of 3 days or longer, covering Miami-Dade and Broward. In practice, the trip starts and ends in Miami: pick the car up in Brickell or have it delivered to a Miami-Dade or Broward address, then drive yourself down and back. Duval Street and most hotel lots run tight, so confirm parking or valet with the property before you arrive.
What else should you plan for before you go?
The rental FAQ says every car comes back at the same fuel level it left with, typically a full tank. It also says tolls incurred during the rental are the renter's responsibility, which covers the Card Sound Road toll here; ask the concierge how tolls are handled on your car. Renters must be 21 or older with a valid license, and Monarc VIP places a refundable card hold of $500 on the Corvette C8, $1,000 on the Porsche 911 Carrera S, $1,500 on the Rolls-Royce Dawn and $2,000 on the Ferrari 488, confirmed in writing before pickup. A $500 booking payment reserves the date and applies to your total; the balance is due at pickup, refundable only if you cancel 7 days out. Stretching into a full week in Miami? 7 days or longer takes 25% off the daily rate, rounded to the nearest $5, times the days: the Carrera S at $695 a day becomes $520, and seven days runs $3,640 before mileage, tolls, or the hold.
The Key West Trip Checklist
- Match rental length to mileage: 4 days (400 miles) covers the round trip with margin; 3 days is about 20 miles short.
- Price the shortfall first: extra miles run $5 to $10 per mile depending on the car.
- Pick the cabin for a long drive: a calmer four-seat convertible or sealed coupe beats a two-seat roadster over four hours each way.
- Plan the route: Seven Mile Bridge is the scenic stretch; Card Sound Road is the cashless-toll bypass around Key Largo.
- Start and end in Miami: delivery is Miami-Dade or Broward, not the Keys; $100 each way applies only on 1-2 day rentals and is free on rentals of 3 days or longer.
- Confirm Key West parking with the property, and return the car at the fuel level you received it.
Get the Mileage Right Before You Book
Tell us your dates and we'll confirm the rental length that covers the round trip, the per-mile rate, and the deposit and delivery terms in writing.
FAQ
How far is Miami to Key West, and does the included mileage cover the round trip?
Roughly 160 miles each way on the Overseas Highway, about 320 round trip. A 1-day rental's 100 included miles fall well short, 3 days (300 miles) is about 20 short, and 4 days (400 miles) covers the loop with room left over. Confirm your exact route and mileage on your quote.
What does it cost if the trip runs over the included miles?
It depends on the car. 100 miles per day are included; additional miles run $5 to $10 per mile. The roughly 20-mile shortfall on a 3-day rental runs about $100 on the Corvette C8, $140 on the Porsche 911 Carrera S or Rolls-Royce Dawn, and $200 on the Ferrari 488. Confirm the per-mile rate on your quote.
Can Monarc VIP deliver the car to me in Key West?
No, Key West isn't a published delivery location. Pickup or delivery is $100 each way on 1-2 day rentals when selected, and free on rentals of 3 days or longer, covering Miami-Dade and Broward. Start and end the drive at a Miami-area address, confirmed on your quote.
Mileage, deposit, delivery, and per-mile figures checked September 21, 2026 against Monarc VIP's rental FAQ, the rates and policies page, and fleet.json via the Dawn, Carrera S, C8, and 488 model pages. Drive distance is public road geography and can change with your starting point; mileage, deposit, and delivery terms are always confirmed on your quote.