How far is Harbor Isle, NY from Islip, NY?
The driving distance from Harbor Isle, NY to Islip, NY is about 28.6 miles (46.1 km), with a travel time of about 00h 42m by car.
- The straight-line flight distance is about 25.4 miles (40.8 km).
- For a round trip, plan for roughly 01h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 42m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
City in Nassau County, New York, United States of America
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 Harbor Isle and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harbor Isle and Islip.
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1
Start on Kent Boulevard
39 m · 8 sec · Kent Boulevard
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2
Turn right onto Lincoln Avenue
800 ft · 35 sec · Lincoln Avenue
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3
Turn right onto Island Parkway North
2943 ft · 1 min · Island Parkway North
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4
Continue on Long Beach Road
3.9 mi · 7 min · Long Beach Road
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5
Turn right onto Sunrise Highway
20.5 mi · 27 min · Sunrise Highway
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6
Take the exit slight right toward CR 13: Fifth Avenue, Bay Shore, Brentwood
738 ft · 18 sec
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7
Turn straight onto Sunrise Highway
2138 ft · 42 sec · Sunrise Highway
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8
Turn right onto 3rd Avenue
1398 ft · 38 sec · 3rd Avenue
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9
At the end of the road, turn straight onto Roosevelt Street
58 m · 6 sec · Roosevelt Street
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10
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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11
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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12
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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13
Continue on Main Street
1.2 km · 1 min · Main Street
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14
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Harbor Isle and Islip.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Sunrise Highway
Turn right onto Sunrise Highway
20.5 mi · 00h 27m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Rain Showers Likely leaving Harbor Isle and Rain Showers Likely near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harbor Isle to Islip?
The road trip is about 28.6 miles (46.1 km) and usually takes 00h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Massapequa Park is a useful midpoint, sitting about 14.3 miles from Harbor Isle and 14.4 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 25.4 miles (40.8 km), while the road route adds roughly 3.2 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:04 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.05 one way or $8.10 round trip. Estimated CO2 is about 9 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Harbor Isle and Rain Showers Likely near Islip.
Stop Ideas Near Massapequa Park
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 Massapequa Park.
New Rochelle station
Stamford Transportation Center
Pennsylvania Station
Yonkers station
Flight Path Map
This map shows the direct air route between Harbor Isle and Islip. Straight-line distance: 25.35 mi (40.8 km).
#1 Harbor Isle
Census-designated place in Nassau County, New York
| Population | 1,301 |
| Coordinates | 40.6034400, -73.6645700 |
| Altitude | 0 |
| Country | United States |
#2 Islip
This Long Island community is situated on the south shore of Suffolk County, New York, at an elevation of 13 feet.
| Population | 322,328 |
| Coordinates | 40.7298200, -73.2103900 |
| Altitude | 4 |
| Country | United States |
End: Islip (-73.21039, 40.72982)
Estimated Travel Time
Distance: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 57m |
| 40 mph (64.37 km/h) | 00h 42m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 28m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $4.05 | $8.10 |
| Mid-grade | $4.48 | $4.53 | $9.05 |
| Premium | $4.86 | $4.91 | $9.82 |
| Diesel | $4.69 | $4.74 | $9.48 |
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.