How far is Islip, NY from Harbor Isle, NY?
The driving distance from Islip, NY to Harbor Isle, NY is about 28.8 miles (46.4 km), with a travel time of about 00h 43m by car.
- The straight-line flight distance is about 25.4 miles (40.8 km).
- For a round trip, plan for roughly 01h 26m 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 43m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
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 Islip and Harbor Isle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip and Harbor Isle.
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1
Start on Main Street
22 m · 7 sec · Main Street
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2
Turn right onto Nassau Avenue
1800 ft · 51 sec · Nassau Avenue
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3
Continue on Nassau Avenue
140 m · 13 sec · Nassau Avenue
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4
Continue on Commack Road
2487 ft · 1 min · Commack Road
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5
Turn left onto Sunrise Highway
1575 ft · 30 sec · Sunrise Highway
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6
Take the ramp slight left toward NY 27 West: New York
709 ft · 17 sec
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7
Merge slight left onto Sunrise Highway
22.9 mi · 30 min · Sunrise Highway
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8
Turn left onto North Long Beach Road
1.1 mi · 2 min · North Long Beach Road
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9
Continue on Long Beach Road
2.8 mi · 5 min · Long Beach Road
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10
Continue on Island Parkway
2704 ft · 1 min · Island Parkway
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11
Turn left onto Madison Avenue
884 ft · 43 sec · Madison Avenue
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12
Turn right onto Kent Boulevard
28 m · 4 sec · Kent Boulevard
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13
Arrive at your destination
0 m · 1 sec · Kent Boulevard
Car Route Details
A richer read on the saved driving route between Islip and Harbor Isle.
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
Merge slight left onto Sunrise Highway
22.9 mi · 00h 30m
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 Islip 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 Islip to Harbor Isle?
The road trip is about 28.8 miles (46.4 km) and usually takes 00h 43m 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 14.4 miles from Islip and 14.4 miles from Harbor Isle.
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 3.4 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 $4.09 one way or $8.18 round trip. Estimated CO2 is about 9.1 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Islip and Rain Showers Likely near Harbor Isle.
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 Islip and Harbor Isle. Straight-line distance: 25.35 mi (40.8 km).
#1 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 |
#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: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 57m |
| 40 mph (64.37 km/h) | 00h 43m |
| 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 | $4.09 | $8.18 |
| Mid-grade | $4.48 | $4.57 | $9.14 |
| Premium | $4.86 | $4.96 | $9.92 |
| Diesel | $4.69 | $4.79 | $9.58 |
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.