How far is Key Biscayne, FL from Port Saint Lucie, FL?
The driving distance from Key Biscayne, FL to Port Saint Lucie, FL is about 121.4 miles (195.3 km), with a travel time of about 02h 04m by car.
- The straight-line flight distance is about 111.2 miles (178.9 km).
- For a round trip, plan for roughly 04h 08m 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 04m.
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.
Census-designated place in Palm Beach County, Florida
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Key Biscayne and Port Saint Lucie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Key Biscayne and Port Saint Lucie.
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1
Start on Crandon Boulevard
2829 ft · 1 min · Crandon Boulevard
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2
Continue on Rickenbacker Causeway
5.6 mi · 10 min · Rickenbacker Causeway
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3
Take the ramp straight toward US 1 South, I 95 North: Coral Gables, Downtown, Airport
3007 ft · 1 min
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4
Merge slight left
3.6 mi · 5 min
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5
Keep slight right
7.8 mi · 10 min
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6
Take the exit slight left toward SR 826 West: Florida's Turnpike Toll
1.3 km · 2 min
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7
Keep slight left to continue on Florida's Turnpike
2242 ft · 55 sec
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8
Merge slight right onto Florida's Turnpike
98.6 mi · 1 hr 50 min · Florida's Turnpike
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9
Take the exit slight right toward Port Saint Lucie
1.3 km · 2 min
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10
Continue on Southwest Bayshore Boulevard
147 m · 15 sec · Southwest Bayshore Boulevard
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11
Turn right onto Southwest Port Saint Lucie Boulevard
1.4 km · 2 min · Southwest Port Saint Lucie Boulevard
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12
Turn left onto Southeast Airoso Boulevard
1.6 mi · 3 min · Southeast Airoso Boulevard
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13
Turn left onto Southwest Carter Avenue
66 m · 9 sec · Southwest Carter Avenue
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14
Arrive at your destination
0 m · 1 sec · Southwest Carter Avenue
Car Route Details
A richer read on the saved driving route between Key Biscayne 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 right onto Florida's Turnpike
98.6 mi · 01h 50m
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.
Mostly Cloudy then Chance Showers And Thunderstorms leaving Key Biscayne and Mostly Cloudy then Showers And Thunderstorms Likely 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 Biscayne to Port Saint Lucie?
The road trip is about 121.4 miles (195.3 km) and usually takes 02h 04m 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?
Villages of Oriole is a useful midpoint, sitting about 60.8 miles from Key Biscayne and 60.6 miles from Port Saint Lucie.
How much longer is the road route than the straight-line distance?
The direct path is about 111.2 miles (178.9 km), while the road route adds roughly 10.2 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 2:22 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.75 one way or $35.51 round trip. Estimated CO2 is about 38 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Chance Showers And Thunderstorms around Key Biscayne and Mostly Cloudy then Showers And Thunderstorms Likely near Port Saint Lucie.
Stop Ideas Near Villages of Oriole
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Deerfield Beach
City of Boynton Beach
LakeWorth City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Villages of Oriole.
Delray Beach
Deerfield Beach
West Palm Beach
Fort Lauderdale
Flight Path Map
This map shows the direct air route between Key Biscayne and Port Saint Lucie. Straight-line distance: 111.17 mi (178.91 km).
#1 Key Biscayne
Village in Miami-Dade County, Florida
| Population | 12,730 |
| Coordinates | 25.6937100, -80.1628200 |
| Altitude | 1 |
| 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: 195 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 02m |
| 40 mph (64.37 km/h) | 03h 02m |
| 50 mph (80.47 km/h) | 02h 25m |
| 60 mph (96.56 km/h) | 02h 01m |
| 70 mph (112.65 km/h) | 01h 44m |
| 80 mph (129 km/h) | 01h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.15 | $17.75 | $35.51 |
| Mid-grade | $4.60 | $19.67 | $39.34 |
| Premium | $4.90 | $20.95 | $41.91 |
| Diesel | $4.35 | $18.62 | $37.24 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.