How far is Port Saint Lucie, FL from Key Biscayne, FL?
The driving distance from Port Saint Lucie, FL to Key Biscayne, FL is about 121.9 miles (196.1 km), with a travel time of about 02h 27m by car.
- The straight-line flight distance is about 111.2 miles (178.9 km).
- For a round trip, plan for roughly 04h 54m 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 27m.
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 Showers And Thunderstorms Likely
Mostly Cloudy then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Port Saint Lucie and Key Biscayne.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Saint Lucie and Key Biscayne.
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1
Start on Southwest Carter Avenue
66 m · 11 sec · Southwest Carter Avenue
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2
Turn right onto Southeast Airoso Boulevard
1.6 mi · 3 min · Southeast Airoso Boulevard
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3
Turn right onto Southwest Port Saint Lucie Boulevard
1.3 km · 1 min · Southwest Port Saint Lucie Boulevard
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4
Turn left onto Southwest Bayshore Boulevard
560 ft · 22 sec · Southwest Bayshore Boulevard
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5
Take the ramp straight toward Florida's Turnpike Toll
2787 ft · 1 min
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6
Keep slight left to continue on Miami, Florida's Turnpike South
2780 ft · 1 min
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7
Merge slight left onto Florida's Turnpike
98.7 mi · 1 hr 49 min · Florida's Turnpike
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8
Take the exit slight right toward I 95, US 441, SR 826 West
1760 ft · 43 sec
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9
Keep slight left to continue on I 95, US 441
1.3 km · 2 min
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10
Keep slight left to continue on I 95 South
752 ft · 18 sec
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11
Merge slight left
11.4 mi · 15 min
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12
Take the exit slight right toward Rickenbacker Causeway, Key Biscayne
1013 ft · 27 sec
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13
Continue on Mary Brickell Road
129 m · 8 sec · Mary Brickell Road
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14
Continue on Southwest 26th Road
155 m · 16 sec · Southwest 26th Road
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15
Continue on Southeast 26th Road
123 m · 13 sec · Southeast 26th Road
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16
Continue on Rickenbacker Causeway
5.7 mi · 10 min · Rickenbacker Causeway
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17
Continue on Crandon Boulevard
3127 ft · 2 min · Crandon Boulevard
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18
Continue on Crandon Boulevard
103 m · 16 sec · Crandon Boulevard
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19
Arrive at your destination
0 m · 1 sec · Crandon Boulevard
Car Route Details
A richer read on the saved driving route between Port Saint Lucie and Key Biscayne.
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
98.7 mi · 01h 49m
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 Showers And Thunderstorms Likely leaving Port Saint Lucie and Mostly Cloudy then Chance Showers And Thunderstorms near Key Biscayne.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Saint Lucie to Key Biscayne?
The road trip is about 121.9 miles (196.1 km) and usually takes 02h 27m 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 61.1 miles from Port Saint Lucie and 60.8 miles from Key Biscayne.
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 10.7 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 1:36 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.84 one way or $35.67 round trip. Estimated CO2 is about 38.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Showers And Thunderstorms Likely around Port Saint Lucie and Mostly Cloudy then Chance Showers And Thunderstorms near Key Biscayne.
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 Port Saint Lucie and Key Biscayne. Straight-line distance: 111.17 mi (178.91 km).
#1 Port Saint Lucie
The second most populous city in St.
| Population | 209,715 |
| Coordinates | 27.2939300, -80.3503300 |
| Altitude | 5 |
| Country | United States |
#2 Key Biscayne
Village in Miami-Dade County, Florida
| Population | 12,730 |
| Coordinates | 25.6937100, -80.1628200 |
| Altitude | 1 |
| Country | United States |
End: Key Biscayne (-80.16282, 25.69371)
Estimated Travel Time
Distance: 196 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 03m |
| 40 mph (64.37 km/h) | 03h 02m |
| 50 mph (80.47 km/h) | 02h 26m |
| 60 mph (96.56 km/h) | 02h 01m |
| 70 mph (112.65 km/h) | 01h 44m |
| 80 mph (129 km/h) | 01h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.15 | $17.84 | $35.67 |
| Mid-grade | $4.60 | $19.76 | $39.53 |
| Premium | $4.90 | $21.05 | $42.11 |
| Diesel | $4.35 | $18.71 | $37.41 |
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.