How far is Brookhaven, NY from Harbor Isle, NY?
The driving distance from Brookhaven, NY to Harbor Isle, NY is about 46.4 miles (74.6 km), with a travel time of about 01h 06m by car.
- The straight-line flight distance is about 41.1 miles (66.1 km).
- For a round trip, plan for roughly 02h 13m 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 01h 06m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census-designated place in Suffolk County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Brookhaven and Harbor Isle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brookhaven and Harbor Isle.
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1
Start on South Country Road
1912 ft · 47 sec · South Country Road
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2
Continue on South Country Road
108 m · 17 sec · South Country Road
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3
Turn straight onto Montauk Highway
1.3 km · 1 min · Montauk Highway
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4
Turn left onto Horseblock Road
1602 ft · 29 sec · Horseblock Road
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5
Take the ramp slight right toward NY 27 West: New York
1374 ft · 34 sec
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6
Merge slight left onto Sunrise Highway
39.9 mi · 54 min · Sunrise Highway
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7
Turn left onto North Long Beach Road
1.1 mi · 2 min · North Long Beach Road
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8
Continue on Long Beach Road
2.8 mi · 5 min · Long Beach Road
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9
Continue on Island Parkway
2704 ft · 1 min · Island Parkway
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10
Turn left onto Madison Avenue
884 ft · 43 sec · Madison Avenue
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11
Turn right onto Kent Boulevard
28 m · 4 sec · Kent Boulevard
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12
Arrive at your destination
0 m · 1 sec · Kent Boulevard
Car Route Details
A richer read on the saved driving route between Brookhaven and Harbor Isle.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Sunrise Highway
Merge slight left onto Sunrise Highway
39.9 mi · 00h 54m
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.
Rain Showers Likely leaving Brookhaven and Rain Showers Likely near Harbor Isle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brookhaven to Harbor Isle?
The road trip is about 46.4 miles (74.6 km) and usually takes 01h 06m 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?
West Islip is a useful midpoint, sitting about 23.1 miles from Brookhaven and 23.2 miles from Harbor Isle.
How much longer is the road route than the straight-line distance?
The direct path is about 41.1 miles (66.1 km), while the road route adds roughly 5.3 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 4:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.57 one way or $13.15 round trip. Estimated CO2 is about 14.6 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Brookhaven and Rain Showers Likely near Harbor Isle.
Stop Ideas Near West Islip
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Town of Babylon History Museum at Old Town Hall
Babylon Town Hall Annex
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to West Islip.
Stamford Transportation Center
New Rochelle station
Bridgeport
Yonkers station
Flight Path Map
This map shows the direct air route between Brookhaven and Harbor Isle. Straight-line distance: 41.09 mi (66.12 km).
#1 Brookhaven
This town in Suffolk County, New York, is the most populous in the state.
| Population | 479,883 |
| Coordinates | 40.7792700, -72.9153800 |
| Altitude | 3 |
| Country | United States |
#2 Harbor Isle
Census-designated place in Nassau County, New York
| Population | 1,301 |
| Coordinates | 40.6034400, -73.6645700 |
| Altitude | 0 |
| Country | United States |
End: Harbor Isle (-73.66457, 40.60344)
Estimated Travel Time
Distance: 75 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 32m |
| 40 mph (64.37 km/h) | 01h 09m |
| 50 mph (80.47 km/h) | 00h 55m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 39m |
| 80 mph (129 km/h) | 00h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $6.57 | $13.15 |
| Mid-grade | $4.48 | $7.35 | $14.70 |
| Premium | $4.86 | $7.97 | $15.94 |
| Diesel | $4.69 | $7.70 | $15.40 |
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 New York · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.