How far is Water Mill, NY from Islip, NY?
The driving distance from Water Mill, NY to Islip, NY is about 49.5 miles (79.7 km), with a travel time of about 01h 12m by car.
- The straight-line flight distance is about 47.2 miles (76 km).
- For a round trip, plan for roughly 02h 24m 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 12m.
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 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 Water Mill and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Water Mill and Islip.
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1
Start on Scuttle Hole Road
10 m · 1 sec · Scuttle Hole Road
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2
Merge slight left onto Montauk Highway
2.2 mi · 4 min · Montauk Highway
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3
Take the exit slight right toward NY 27 West: New York
113 m · 7 sec
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4
Merge slight left onto County Road 39A
5.5 mi · 11 min · County Road 39A
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5
Continue on Sunrise Highway
39.9 mi · 53 min · Sunrise Highway
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6
Take the exit slight right toward NY 111: Islip, Smithtown
593 ft · 15 sec
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7
Turn straight onto Sunrise Highway
3070 ft · 58 sec · Sunrise Highway
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8
Turn slight right onto NY 111 South: Islip
713 ft · 35 sec
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9
Turn straight onto Islip Avenue
1.4 km · 2 min · Islip Avenue
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10
At the end of the road, turn right onto Main Street
865 ft · 15 sec · Main Street
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11
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Water Mill and Islip.
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
Continue on Sunrise Highway
39.9 mi · 00h 53m
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 Water Mill 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 Water Mill to Islip?
The road trip is about 49.5 miles (79.7 km) and usually takes 01h 12m 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?
East Moriches is a useful midpoint, sitting about 24.7 miles from Water Mill and 24.8 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 47.2 miles (76 km), while the road route adds roughly 2.3 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 4:06 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.02 one way or $14.03 round trip. Estimated CO2 is about 15.6 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Water Mill and Rain Showers Likely near Islip.
Stop Ideas Near East Moriches
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to East Moriches.
Bridgeport
Union Station
Old Saybrook station
Stamford Transportation Center
Flight Path Map
This map shows the direct air route between Water Mill and Islip. Straight-line distance: 47.22 mi (75.99 km).
#1 Water Mill
Census-designated place in Suffolk County, New York
| Population | 1,559 |
| Coordinates | 40.9195900, -72.3427400 |
| Altitude | 3 |
| 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: 80 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 38m |
| 40 mph (64.37 km/h) | 01h 14m |
| 50 mph (80.47 km/h) | 00h 59m |
| 60 mph (96.56 km/h) | 00h 49m |
| 70 mph (112.65 km/h) | 00h 42m |
| 80 mph (129 km/h) | 00h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $7.02 | $14.03 |
| Mid-grade | $4.48 | $7.84 | $15.68 |
| Premium | $4.86 | $8.51 | $17.01 |
| Diesel | $4.69 | $8.21 | $16.43 |
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.