How far is Key Largo, FL from Port Saint Lucie, FL?
The driving distance from Key Largo, FL to Port Saint Lucie, FL is about 175.3 miles (282.1 km), with a travel time of about 02h 55m by car.
- The straight-line flight distance is about 152.6 miles (245.6 km).
- For a round trip, plan for roughly 05h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 02h 55m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in Broward County, Florida.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Key Largo and Port Saint Lucie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Key Largo and Port Saint Lucie.
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1
Start on Harbor Drive
94 m · 16 sec · Harbor Drive
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2
Turn right onto Overseas Highway
9.3 mi · 16 min · Overseas Highway
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3
Continue on Dixie Highway
19.4 mi · 27 min · Dixie Highway
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4
Take the exit slight right toward Miami, Orlando, Florida's Turnpike North
1785 ft · 38 sec
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5
Continue on Homestead Extension of Florida's Turnpike
13.2 mi · 16 min · Homestead Extension of Florida's Turnpike
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6
Keep slight right to continue on Homestead Extension of Florida's Turnpike
3.6 mi · 5 min · Homestead Extension of Florida's Turnpike
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7
Keep slight left to continue on Homestead Extension of Florida's Turnpike
2.5 mi · 3 min · Homestead Extension of Florida's Turnpike
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8
Keep slight right to continue on Homestead Extension of Florida's Turnpike
27.1 mi · 30 min · Homestead Extension of Florida's Turnpike
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9
Keep slight right to continue on Homestead Extension of Florida's Turnpike
1 mi · 1 min · Homestead Extension of Florida's Turnpike
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10
Merge slight left onto Florida's Turnpike
95.2 mi · 1 hr 46 min · Florida's Turnpike
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11
Take the exit slight right toward Port Saint Lucie
1.3 km · 2 min
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12
Continue on Southwest Bayshore Boulevard
147 m · 15 sec · Southwest Bayshore Boulevard
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13
Turn right onto Southwest Port Saint Lucie Boulevard
1.4 km · 2 min · Southwest Port Saint Lucie Boulevard
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14
Turn left onto Southeast Airoso Boulevard
1.6 mi · 3 min · Southeast Airoso Boulevard
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15
Turn left onto Southwest Carter Avenue
66 m · 9 sec · Southwest Carter Avenue
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16
Arrive at your destination
0 m · 1 sec · Southwest Carter Avenue
Car Route Details
A richer read on the saved driving route between Key Largo and Port Saint Lucie.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Florida's Turnpike
Merge slight left onto Florida's Turnpike
95.2 mi · 01h 46m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Slight Chance Rain Showers leaving Key Largo and Mostly Sunny near Port Saint Lucie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Key Largo to Port Saint Lucie?
The road trip is about 175.3 miles (282.1 km) and usually takes 02h 55m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Lauderhill is a useful midpoint, sitting about 87.7 miles from Key Largo and 87.6 miles from Port Saint Lucie.
How much longer is the road route than the straight-line distance?
The direct path is about 152.6 miles (245.6 km), while the road route adds roughly 22.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 12:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.68 one way or $51.35 round trip. Estimated CO2 is about 55 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Key Largo and Mostly Sunny near Port Saint Lucie.
Stop Ideas Near Lauderhill
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Aventura Mall
City Hall Parking Garage
City Hall in the Mall
Juana’s Latin Sports Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lauderhill.
Fort Lauderdale
Hollywood
Deerfield Beach
Miami Intermodal Center
Flight Path Map
This map shows the direct air route between Key Largo and Port Saint Lucie. Straight-line distance: 152.63 mi (245.64 km).
#1 Key Largo
Census designated place in Florida, United States
| Population | 10,433 |
| Coordinates | 25.0865200, -80.4472800 |
| Altitude | 2 |
| Country | United States |
#2 Port Saint Lucie
The second most populous city in St.
| Population | 209,715 |
| Coordinates | 27.2939300, -80.3503300 |
| Altitude | 5 |
| Country | United States |
End: Southwest Carter Avenue (-80.350328, 27.294381)
Estimated Travel Time
Distance: 282 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 50m |
| 40 mph (64.37 km/h) | 04h 22m |
| 50 mph (80.47 km/h) | 03h 30m |
| 60 mph (96.56 km/h) | 02h 55m |
| 70 mph (112.65 km/h) | 02h 30m |
| 80 mph (129 km/h) | 02h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.15 | $25.68 | $51.35 |
| Mid-grade | $4.60 | $28.45 | $56.90 |
| Premium | $4.90 | $30.31 | $60.61 |
| Diesel | $4.35 | $26.93 | $53.85 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Florida · May 07, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.