How far is Potsdam, NY from Islip, NY?
The driving distance from Potsdam, NY to Islip, NY is about 390.5 miles (628.5 km), with a travel time of about 07h 02m by car.
- The straight-line flight distance is about 286.7 miles (461.4 km).
- For a round trip, plan for roughly 14h 05m 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 07h 02m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Albany County, New York, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Potsdam and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Potsdam and Islip.
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1
Start on Elm Street
86 m · 17 sec · Elm Street
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2
Turn left onto Park Street
76 m · 7 sec · Park Street
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3
Keep slight left to continue on Park Street
60 m · 8 sec · Park Street
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4
Continue on Pierrepont Avenue
1.5 km · 2 min · Pierrepont Avenue
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5
Continue on State Highway 56
31.4 mi · 47 min · State Highway 56
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6
At the end of the road, turn left onto State Route 3
14.8 mi · 20 min · State Route 3
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7
Continue on Main Street
1 mi · 3 min · Main Street
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8
Continue on Demars Boulevard
1.2 mi · 3 min · Demars Boulevard
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9
Continue on Lake Street
791 ft · 31 sec · Lake Street
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10
Turn left onto Mill Street
86 m · 12 sec · Mill Street
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11
Turn right onto East Park Street
911 ft · 33 sec · East Park Street
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12
Turn left onto Wawbeek Avenue
1.9 mi · 4 min · Wawbeek Avenue
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13
Continue on Adirondack Trail
1.2 km · 1 min · Adirondack Trail
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14
Continue on Moody Road
2469 ft · 47 sec · Moody Road
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15
Continue on Adirondack Trail
18.1 mi · 25 min · Adirondack Trail
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16
Continue on Lake Street
1746 ft · 43 sec · Lake Street
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17
Continue on Adirondack Trail
2171 ft · 58 sec · Adirondack Trail
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18
At the end of the road, turn left onto State Highway 28N
1.1 km · 1 min · State Highway 28N
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19
Continue on Newcomb Road
2.5 mi · 3 min · Newcomb Road
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20
Continue on State Highway 28N
29.6 mi · 42 min · State Highway 28N
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21
Turn slight left onto A P Morse Highway
2.8 mi · 4 min · A P Morse Highway
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22
Keep slight left to continue on Donnelly Road
3076 ft · 1 min · Donnelly Road
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23
Continue on County Highway 29
1.2 mi · 2 min · County Highway 29
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24
Continue on Olmstedville Road
4.8 mi · 7 min · Olmstedville Road
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25
Turn straight
1157 ft · 39 sec
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26
Turn left onto Valley Farm Road
1326 ft · 33 sec · Valley Farm Road
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27
Take the ramp right
1282 ft · 31 sec
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28
Merge slight left onto Adirondack Northway
77 mi · 1 hr 31 min · Adirondack Northway
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29
Keep slight right to continue on I 87 South, I 90: Boston, Albany, New York, Buffalo
1694 ft · 32 sec
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30
Continue on I 87 South, I 90 West: New York, Buffalo
2619 ft · 51 sec
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31
Keep slight right to continue on I 87 South: New York
117.8 mi · 2 hr 17 min
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32
Keep slight right to continue on I 287 South, NJ 17 South: New Jersey
1.5 km · 60 sec
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33
Continue straight
2496 ft · 39 sec
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34
Keep slight left to continue on NJ 17 South: Mahwah
14.1 mi · 19 min
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35
Take the exit slight right toward NJ 4, GSP South: Paterson, Fort Lee, New York
566 ft · 19 sec
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36
Keep slight left to continue on NJ 4 East: Fort Lee, New York
2455 ft · 1 min
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37
Merge slight left
1417 ft · 24 sec
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38
Continue straight
6.4 mi · 9 min
-
39
Take the exit slight left toward I 95 North: George Washington Bridge
1124 ft · 18 sec
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40
Merge slight left
1.2 km · 55 sec
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41
Keep slight left
1.3 km · 1 min
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42
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
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43
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
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44
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
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45
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
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46
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
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47
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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48
Continue on Clearview Expressway
5 mi · 5 min · Clearview Expressway
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49
Continue on Hollis Court Boulevard
1.2 km · 1 min · Hollis Court Boulevard
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50
At the end of the road, turn left onto Jamaica Avenue
1117 ft · 35 sec · Jamaica Avenue
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51
Turn right onto Hempstead Avenue
1.4 km · 2 min · Hempstead Avenue
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52
Turn right onto 225th Street
69 m · 10 sec · 225th Street
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53
Take the ramp straight toward Cross Island Parkway South, Verrazano Bridge
1171 ft · 29 sec
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54
Merge slight left onto Cross Island Parkway
1.3 mi · 2 min · Cross Island Parkway
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55
Take the exit slight left toward Southern State Parkway East, Eastern Long Island
2383 ft · 1 min
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56
Merge slight left onto Southern State Parkway
24.5 mi · 31 min · Southern State Parkway
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57
Keep slight left to continue on Southern State Parkway
1072 ft · 16 sec · Southern State Parkway
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58
Take the exit slight right toward Bay Shore Road South, Bay Shore
1044 ft · 32 sec
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59
Turn straight onto Bay Shore Road
2667 ft · 1 min · Bay Shore Road
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60
Continue on Howells Road
1845 ft · 44 sec · Howells Road
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61
Turn straight onto Sunrise Highway
104 m · 7 sec · Sunrise Highway
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62
Keep slight right to continue on Howells Road
3115 ft · 2 min · Howells Road
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63
Continue on Roosevelt Street
1248 ft · 25 sec · Roosevelt Street
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64
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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65
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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66
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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67
Continue on Main Street
1.2 km · 1 min · Main Street
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68
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Potsdam and Islip.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 87 South
Keep slight right to continue on I 87 South: New York
118 mi · 02h 17m
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.
Mostly Sunny leaving Potsdam and Partly Sunny then Slight Chance Rain Showers near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Potsdam to Islip?
The road trip is about 390.5 miles (628.5 km) and usually takes 07h 02m 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?
Colonie is a useful midpoint, sitting about 191.8 miles from Potsdam and 198.8 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 286.7 miles (461.4 km), while the road route adds roughly 103.8 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 $55.24 one way or $110.49 round trip. Estimated CO2 is about 122.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Potsdam and Partly Sunny then Slight Chance Rain Showers near Islip.
Stop Ideas Near Colonie
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Lot
Albany City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Colonie.
Albany–Rensselaer
Schenectady
Amsterdam station
Saratoga Springs, NY
Flight Path Map
This map shows the direct air route between Potsdam and Islip. Straight-line distance: 286.67 mi (461.35 km).
#1 Potsdam
Village in New York
| Population | 8,796 |
| Coordinates | 44.6697800, -74.9813100 |
| Altitude | 132 |
| 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: 629 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 00m |
| 40 mph (64.37 km/h) | 09h 45m |
| 50 mph (80.47 km/h) | 07h 48m |
| 60 mph (96.56 km/h) | 06h 30m |
| 70 mph (112.65 km/h) | 05h 34m |
| 80 mph (129 km/h) | 04h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $55.24 | $110.49 |
| Mid-grade | $4.48 | $61.75 | $123.50 |
| Premium | $4.86 | $66.98 | $133.97 |
| Diesel | $4.69 | $64.68 | $129.37 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.