How far is Thomaston, NY from Islip, NY?
The driving distance from Thomaston, NY to Islip, NY is about 35.2 miles (56.7 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 26.7 miles (42.9 km).
- For a round trip, plan for roughly 01h 28m 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 44m.
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.
Hamlet on Long Island, New York, United States
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 Thomaston and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thomaston and Islip.
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1
Start on Linden Street
46 m · 7 sec · Linden Street
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2
Keep slight right to continue on Linden Street
139 m · 27 sec · Linden Street
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3
Turn left onto Susquehanna Avenue
158 m · 22 sec · Susquehanna Avenue
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4
Turn right onto Northern Boulevard
1528 ft · 32 sec · Northern Boulevard
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5
Turn left onto Lakeville Road
1 mi · 2 min · Lakeville Road
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6
Turn left onto South Service Road
1515 ft · 34 sec · South Service Road
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7
Take the ramp slight left toward I 495 East: Riverhead
948 ft · 25 sec
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8
Merge slight left onto Long Island Expressway
25.4 mi · 35 min · Long Island Expressway
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9
Take the exit slight right toward CR 67: Motor Parkway, Central Islip
1119 ft · 32 sec
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10
Turn straight onto Express Drive South
1230 ft · 27 sec · Express Drive South
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11
Turn right onto Motor Parkway
1.5 km · 2 min · Motor Parkway
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12
Turn right onto Joshuas Path
1.1 mi · 2 min · Joshuas Path
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13
Continue on Islip Avenue
4 mi · 7 min · Islip Avenue
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14
At the end of the road, turn right onto Main Street
865 ft · 15 sec · Main Street
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15
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Thomaston 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.
Long Island Expressway
Merge slight left onto Long Island Expressway
25.4 mi · 00h 35m
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 Thomaston 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 Thomaston to Islip?
The road trip is about 35.2 miles (56.7 km) and usually takes 00h 44m 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?
Melville is a useful midpoint, sitting about 17 miles from Thomaston and 18.3 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 26.7 miles (42.9 km), while the road route adds roughly 8.5 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 7:02 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.97 one way or $9.94 round trip. Estimated CO2 is about 11 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Thomaston and Rain Showers Likely near Islip.
Stop Ideas Near Melville
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 Melville.
Stamford Transportation Center
New Rochelle station
Yonkers station
Bridgeport
Flight Path Map
This map shows the direct air route between Thomaston and Islip. Straight-line distance: 26.63 mi (42.86 km).
#1 Thomaston
Human settlement in Nassau County, New York, United States of America
| Population | 2,602 |
| Coordinates | 40.7862100, -73.7137400 |
| Altitude | 60 |
| 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: Main Street (-73.210382, 40.729789)
Estimated Travel Time
Distance: 57 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 10m |
| 40 mph (64.37 km/h) | 00h 52m |
| 50 mph (80.47 km/h) | 00h 42m |
| 60 mph (96.56 km/h) | 00h 35m |
| 70 mph (112.65 km/h) | 00h 30m |
| 80 mph (129 km/h) | 00h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $4.97 | $9.94 |
| Mid-grade | $4.48 | $5.56 | $11.11 |
| Premium | $4.86 | $6.03 | $12.06 |
| Diesel | $4.69 | $5.82 | $11.64 |
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.