How far is Sullivan, NY from Islip, NY?
The driving distance from Sullivan, NY to Islip, NY is about 317.3 miles (510.6 km), with a travel time of about 05h 08m by car.
- The straight-line flight distance is about 210.2 miles (338.3 km).
- For a round trip, plan for roughly 10h 16m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 08m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Town in New York, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Slight Chance Rain Showers
Partly Sunny
Driving Route Map
The map below follows the saved road route between Sullivan and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sullivan and Islip.
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1
Start on Canaseraga Road
19 m · 4 sec · Canaseraga Road
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2
Turn right onto State Route 5
108 m · 5 sec · State Route 5
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3
Continue on East Genesee Street
1.5 km · 2 min · East Genesee Street
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4
Continue on Genesee Street
1.1 km · 2 min · Genesee Street
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5
Turn left onto Falls Boulevard
4.3 mi · 6 min · Falls Boulevard
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6
Continue on Gorge Road
4.2 mi · 6 min · Gorge Road
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7
Continue on Sweetland Street
1918 ft · 54 sec · Sweetland Street
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8
Continue on Farnham Street
1757 ft · 54 sec · Farnham Street
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9
At the end of the road, turn right onto Albany Street
2239 ft · 1 min · Albany Street
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10
Turn left onto Forman Street
901 ft · 28 sec · Forman Street
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11
Continue on Rippleton Road
5.8 mi · 8 min · Rippleton Road
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12
Continue on State Route 13
1300 ft · 26 sec · State Route 13
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13
Turn left onto Main Street
2491 ft · 1 min · Main Street
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14
Continue on McKinley Street
1.1 mi · 2 min · McKinley Street
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15
Continue on State Route 13
1.9 mi · 3 min · State Route 13
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16
Continue on State Route 80
6.1 mi · 9 min · State Route 80
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17
Continue on State Route 80
2.7 mi · 4 min · State Route 80
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18
Continue on State Highway 26
2.2 mi · 3 min · State Highway 26
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19
Turn left onto County Road 16
11.8 mi · 17 min · County Road 16
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20
Turn left
1.2 mi · 2 min
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21
Turn left onto County Road 44
2.8 mi · 4 min · County Road 44
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22
Turn right onto State Highway 12
1.2 mi · 2 min · State Highway 12
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23
Continue on North Broad Street
2925 ft · 2 min · North Broad Street
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24
Turn left onto Rexford Street
8.3 mi · 10 min · Rexford Street
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25
Turn right onto State Highway 8
17.8 mi · 20 min · State Highway 8
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26
Continue on Airport Road
2268 ft · 29 sec · Airport Road
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27
Continue on State Highway 8
19 mi · 22 min · State Highway 8
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28
Continue on Oak Street
1409 ft · 18 sec · Oak Street
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29
Continue on State Highway 10
2251 ft · 45 sec · State Highway 10
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30
Take the exit left toward NY 17 East
1287 ft · 27 sec
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31
Merge slight left
105.1 mi · 2 hr 11 min
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32
Keep slight left to continue on I 87, NYST: Albany, New York City
1.1 km · 60 sec
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33
Keep slight right to continue on I 87 Toll South: New York City
1.5 km · 2 min
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34
Merge slight left onto New York State Thruway
13.7 mi · 16 min · New York State Thruway
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35
Keep slight right to continue on I 287 South, NJ 17 South: New Jersey
1.5 km · 60 sec
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36
Continue straight
2496 ft · 39 sec
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37
Keep slight left to continue on NJ 17 South: Mahwah
14.1 mi · 19 min
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38
Take the exit slight right toward NJ 4, GSP South: Paterson, Fort Lee, New York
566 ft · 19 sec
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39
Keep slight left to continue on NJ 4 East: Fort Lee, New York
2455 ft · 1 min
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40
Merge slight left
1417 ft · 24 sec
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41
Continue straight
6.4 mi · 9 min
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42
Take the exit slight left toward I 95 North: George Washington Bridge
1124 ft · 18 sec
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43
Merge slight left
1.2 km · 55 sec
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44
Keep slight left
1.3 km · 1 min
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45
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
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46
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
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47
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
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48
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
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49
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
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50
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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51
Continue on Clearview Expressway
5 mi · 5 min · Clearview Expressway
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52
Continue on Hollis Court Boulevard
1.2 km · 1 min · Hollis Court Boulevard
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53
At the end of the road, turn left onto Jamaica Avenue
1117 ft · 35 sec · Jamaica Avenue
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54
Turn right onto Hempstead Avenue
1.4 km · 2 min · Hempstead Avenue
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55
Turn right onto 225th Street
69 m · 10 sec · 225th Street
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56
Take the ramp straight toward Cross Island Parkway South, Verrazano Bridge
1171 ft · 29 sec
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57
Merge slight left onto Cross Island Parkway
1.3 mi · 2 min · Cross Island Parkway
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58
Take the exit slight left toward Southern State Parkway East, Eastern Long Island
2383 ft · 1 min
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59
Merge slight left onto Southern State Parkway
24.5 mi · 31 min · Southern State Parkway
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60
Keep slight left to continue on Southern State Parkway
1072 ft · 16 sec · Southern State Parkway
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61
Take the exit slight right toward Bay Shore Road South, Bay Shore
1044 ft · 32 sec
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62
Turn straight onto Bay Shore Road
2667 ft · 1 min · Bay Shore Road
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63
Continue on Howells Road
1845 ft · 44 sec · Howells Road
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64
Turn straight onto Sunrise Highway
104 m · 7 sec · Sunrise Highway
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65
Keep slight right to continue on Howells Road
3115 ft · 2 min · Howells Road
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66
Continue on Roosevelt Street
1248 ft · 25 sec · Roosevelt Street
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67
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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68
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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69
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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70
Continue on Main Street
1.2 km · 1 min · Main Street
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71
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Sullivan and Islip.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
NY 17 East
Merge slight left
105 mi · 02h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Partly Sunny then Slight Chance Rain Showers leaving Sullivan and Partly Sunny near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sullivan to Islip?
The road trip is about 317.3 miles (510.6 km) and usually takes 05h 08m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Liberty is a useful midpoint, sitting about 144.7 miles from Sullivan and 172.6 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 210.2 miles (338.3 km), while the road route adds roughly 107.1 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 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 6:44 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $44.90 one way or $89.80 round trip. Estimated CO2 is about 99.5 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Rain Showers around Sullivan and Partly Sunny near Islip.
Stop Ideas Near Liberty
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 Liberty.
Rhinecliff–Kingston station
Poughkeepsie station
Scranton, PA
Hudson
Flight Path Map
This map shows the direct air route between Sullivan and Islip. Straight-line distance: 210.18 mi (338.26 km).
#1 Sullivan
City in Madison County, New York, United States of America
| Population | 15,080 |
| Coordinates | 43.0545100, -75.8468600 |
| Altitude | 139 |
| 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: 511 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 34m |
| 40 mph (64.37 km/h) | 07h 55m |
| 50 mph (80.47 km/h) | 06h 20m |
| 60 mph (96.56 km/h) | 05h 17m |
| 70 mph (112.65 km/h) | 04h 31m |
| 80 mph (129 km/h) | 03h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $44.90 | $89.80 |
| Mid-grade | $4.48 | $50.19 | $100.37 |
| Premium | $4.86 | $54.44 | $108.89 |
| Diesel | $4.69 | $52.57 | $105.15 |
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.