How far is Islip, NY from De Witt, NY?
The driving distance from Islip, NY to De Witt, NY is about 300.4 miles (483.4 km), with a travel time of about 06h 11m by car.
- The straight-line flight distance is about 217 miles (349.3 km).
- For a round trip, plan for roughly 12h 22m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 06h 11m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Human settlement in Sullivan County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Islip and De Witt.
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip and De Witt.
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1
Start on Main Street
1.2 km · 1 min · Main Street
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2
Continue on Montauk Highway
1014 ft · 19 sec · Montauk Highway
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3
Continue on Main Street
1.1 mi · 2 min · Main Street
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4
Turn right onto 3rd Avenue
2920 ft · 1 min · 3rd Avenue
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5
Continue on Rossevelt Street
1821 ft · 37 sec · Rossevelt Street
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6
Continue on Howells Road
1.1 km · 2 min · Howells Road
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7
Turn straight onto Sunrise Highway
50 m · 3 sec · Sunrise Highway
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8
Keep slight right to continue on Howells Road
1588 ft · 36 sec · Howells Road
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9
Continue on Bay Shore Road
3165 ft · 1 min · Bay Shore Road
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10
Take the ramp slight right toward SO West: New York
736 ft · 19 sec
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11
Continue straight
111 m · 9 sec
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12
Merge slight left onto Southern State Parkway
24.7 mi · 32 min · Southern State Parkway
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13
Take the exit slight right toward Cross Island Parkway North, Whitestone Bridge
1780 ft · 43 sec
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14
Merge slight left onto Cross Island Parkway
1.3 mi · 2 min · Cross Island Parkway
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15
Take the exit slight right toward NY 24: UBS Arena-Belmont Park
97 m · 9 sec
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16
Keep slight left to continue on NY 24 West: Hempstead Avenue
133 m · 12 sec
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17
Keep slight right to continue on Cross Island Parkway North, Hempstead Avenue West
532 ft · 15 sec
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18
Keep slight right to continue on Hempstead Avenue West
81 m · 8 sec
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19
Continue on Grandstand, Hempstead Avenue West
549 ft · 14 sec
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20
Keep slight left to continue on Hempstead Avenue
31 m · 5 sec
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21
Turn right onto Hempstead Avenue
1.6 km · 2 min · Hempstead Avenue
-
22
Turn left onto Jamaica Avenue
553 ft · 17 sec · Jamaica Avenue
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23
Turn right onto 212th Street
1.2 km · 1 min · 212th Street
-
24
Continue on Clearview Expressway
5 mi · 5 min · Clearview Expressway
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25
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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26
Continue on Throgs Neck Expressway
1.1 km · 1 min · Throgs Neck Expressway
-
27
Keep slight left to continue on Cross Bronx Expressway
6.6 mi · 9 min · Cross Bronx Expressway
-
28
Keep slight left to continue on Trans-Manhattan Expressway
1.1 km · 1 min · Trans-Manhattan Expressway
-
29
Continue on George Washington Bridge (upper level)
3167 ft · 60 sec · George Washington Bridge (upper level)
-
30
Continue straight
2659 ft · 48 sec
-
31
Keep slight left
3214 ft · 39 sec
-
32
Keep slight left
559 ft · 9 sec
-
33
Take the exit slight right toward I 95 South, NJTP South: Hackensack
1270 ft · 23 sec
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34
Keep slight left to continue on I 95 South, NJTP South: Hackensack
1884 ft · 29 sec
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35
Merge slight left onto New Jersey Turnpike
2 mi · 3 min · New Jersey Turnpike
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36
Take the exit slight right toward I 80 West: Paterson, Hackensack
1.3 km · 1 min
-
37
Continue on Christopher Columbus Highway
68.2 mi · 1 hr 21 min · Christopher Columbus Highway
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38
Keep slight left to continue on Keystone Shortway
5.5 mi · 8 min · Keystone Shortway
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39
Keep slight left to continue on Keystone Shortway
11.9 mi · 16 min · Keystone Shortway
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40
Take the exit slight right toward I 380 North: Scranton
1.1 km · 46 sec
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41
Continue straight
27.7 mi · 31 min
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42
Merge slight right
58.1 mi · 1 hr 9 min
-
43
Keep slight right to continue on I 81 North: Syracuse, Albany
1.8 mi · 2 min
-
44
Keep slight left to continue on I 81 North: Syracuse
66.5 mi · 1 hr 17 min
-
45
Keep slight right
1.1 km · 50 sec
-
46
Continue straight
4.7 mi · 5 min
-
47
Take the exit slight right toward NY 5 West, NY 92 West: DeWitt
1437 ft · 49 sec
-
48
Merge slight left onto East Genesee Street
1.3 km · 2 min · East Genesee Street
-
49
Turn right onto Terrace Drive
111 m · 18 sec · Terrace Drive
-
50
Turn right onto Lansdowne Road
50 m · 12 sec · Lansdowne Road
-
51
Turn left onto Downing Road
636 ft · 33 sec · Downing Road
-
52
Turn left onto Hampshire Drive
83 m · 12 sec · Hampshire Drive
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53
Arrive at your destination
0 m · 1 sec · Hampshire Drive
Car Route Details
A richer read on the saved driving route between Islip and De Witt.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Christopher Columbus Highway
Continue on Christopher Columbus Highway
68.2 mi · 01h 21m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Partly Sunny leaving Islip and Mostly Sunny then Chance Rain Showers near De Witt.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Islip to De Witt?
The road trip is about 300.4 miles (483.4 km) and usually takes 06h 11m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Tusten is a useful midpoint, sitting about 150.1 miles from Islip and 150.2 miles from De Witt.
How much longer is the road route than the straight-line distance?
The direct path is about 217 miles (349.3 km), while the road route adds roughly 83.4 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 6:00 AM to 7:30 AM EDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.50 one way or $84.99 round trip. Estimated CO2 is about 94.2 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Islip and Mostly Sunny then Chance Rain Showers near De Witt.
Stop Ideas Near Tusten
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 Tusten.
Scranton, PA
White Haven, PA
Wilkes-Barre, PA
Poughkeepsie station
Flight Path Map
This map shows the direct air route between Islip and De Witt. Straight-line distance: 217.07 mi (349.34 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 De Witt
Town in Onondaga County, New York, USA
| Population | 24,962 |
| Coordinates | 43.0386800, -76.0729800 |
| Altitude | 172 |
| Country | United States |
End: De Witt (-76.07298, 43.03868)
Estimated Travel Time
Distance: 483 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 00m |
| 40 mph (64.37 km/h) | 07h 30m |
| 50 mph (80.47 km/h) | 06h 00m |
| 60 mph (96.56 km/h) | 05h 00m |
| 70 mph (112.65 km/h) | 04h 17m |
| 80 mph (129 km/h) | 03h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $42.50 | $84.99 |
| Mid-grade | $4.48 | $47.50 | $95.00 |
| Premium | $4.86 | $51.53 | $103.05 |
| Diesel | $4.69 | $49.76 | $99.51 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.