How far is Islip, NY from Portland, NY?
The driving distance from Islip, NY to Portland, NY is about 443.9 miles (714.4 km), with a travel time of about 09h 34m by car.
- The straight-line flight distance is about 342.9 miles (551.9 km).
- For a round trip, plan for roughly 19h 08m 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 09h 34m.
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.
Human settlement in Chemung County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Islip and Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip and Portland.
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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
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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
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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
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27
Keep slight left to continue on Cross Bronx Expressway
6.6 mi · 9 min · Cross Bronx Expressway
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28
Keep slight left to continue on Trans-Manhattan Expressway
1.1 km · 1 min · Trans-Manhattan Expressway
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29
Continue on George Washington Bridge (upper level)
3167 ft · 60 sec · George Washington Bridge (upper level)
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30
Continue straight
2659 ft · 48 sec
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31
Keep slight left
3214 ft · 39 sec
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32
Keep slight left
559 ft · 9 sec
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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
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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
194.5 mi · 3 hr 36 min · Keystone Shortway
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40
Take the exit slight right toward PA 153: Clearfield, Penfield
2880 ft · 1 min
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41
Keep slight right
1315 ft · 32 sec
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42
Turn straight onto State Park Road
7.5 mi · 13 min · State Park Road
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43
Continue on Hoovertown Road
5 mi · 9 min · Hoovertown Road
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44
Continue on Penfield Road
3.7 mi · 6 min · Penfield Road
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45
At the end of the road, turn right
12.3 mi · 19 min
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46
Turn right onto Montmorenci Avenue
1.6 km · 2 min · Montmorenci Avenue
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47
Continue on Montmorenci Road
8.8 mi · 13 min · Montmorenci Road
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48
Continue on Highland Road
5.4 mi · 8 min · Highland Road
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49
At the end of the road, turn left onto Kane-Russell City Road
2.7 mi · 4 min · Kane-Russell City Road
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50
Take the exit slight right
8.6 mi · 12 min
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51
Continue straight
2.3 mi · 5 min
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52
At the end of the road, turn left onto West Main Street
1.2 mi · 2 min · West Main Street
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53
Continue on Grand Army of the Republic Highway
4.5 mi · 6 min · Grand Army of the Republic Highway
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54
Continue on South Main Street
1.4 mi · 3 min · South Main Street
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55
Continue on Grand Army of the Republic Highway
2.9 mi · 5 min · Grand Army of the Republic Highway
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56
Continue on Main Street
1169 ft · 35 sec · Main Street
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57
Continue on Crescent Park
1.8 mi · 4 min · Crescent Park
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58
Continue on Crescent Park
2270 ft · 1 min · Crescent Park
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59
Turn right onto Hickory Bridge
746 ft · 17 sec · Hickory Bridge
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60
Continue on Hickory Street
956 ft · 25 sec · Hickory Street
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61
Turn right onto West 4th Avenue
1071 ft · 23 sec · West 4th Avenue
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62
Turn left onto Market Street
2.1 mi · 2 min · Market Street
-
63
Turn left onto Jackson Run Road
8.8 mi · 13 min · Jackson Run Road
-
64
Continue on Main Street
1238 ft · 24 sec · Main Street
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65
Continue on Jackson Run Road
3.6 mi · 5 min · Jackson Run Road
-
66
Continue on Mechanic Street
1826 ft · 38 sec · Mechanic Street
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67
At the end of the road, turn right onto Main Street
123 m · 13 sec · Main Street
-
68
Turn left onto Forrest Street
3010 ft · 1 min · Forrest Street
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69
Continue on Big Tree Road
1.5 km · 2 min · Big Tree Road
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70
Continue on Big Tree-Sugar Grove Road
3.9 mi · 7 min · Big Tree-Sugar Grove Road
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71
Continue on Big Tree Road
2.6 mi · 4 min · Big Tree Road
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72
Turn left onto West Fairmount Avenue
1670 ft · 41 sec · West Fairmount Avenue
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73
Continue on West Lake Road
12.5 mi · 19 min · West Lake Road
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74
Continue on South Erie Street
2.5 mi · 4 min · South Erie Street
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75
Continue on Portage Road
4.4 mi · 7 min · Portage Road
-
76
Continue on South Portage Street
1.1 mi · 2 min · South Portage Street
-
77
Turn right onto East Main Street
1.4 mi · 3 min · East Main Street
-
78
Continue on Erie Road
5.6 mi · 8 min · Erie Road
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79
Arrive at your destination
0 m · 1 sec · Erie Road
Car Route Details
A richer read on the saved driving route between Islip and Portland.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Keystone Shortway
Keep slight left to continue on Keystone Shortway
195 mi · 03h 36m
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.
Rain Showers Likely leaving Islip and Chance Rain Showers near Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Islip to Portland?
The road trip is about 443.9 miles (714.4 km) and usually takes 09h 34m 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?
Wellsburg is a useful midpoint, sitting about 221.6 miles from Islip and 222.3 miles from Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 342.9 miles (551.9 km), while the road route adds roughly 101 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 $62.78 one way or $125.56 round trip. Estimated CO2 is about 139.2 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Islip and Chance Rain Showers near Portland.
Stop Ideas Near Wellsburg
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 Wellsburg.
Scranton, PA
Wilkes-Barre, PA
Flight Path Map
This map shows the direct air route between Islip and Portland. Straight-line distance: 342.92 mi (551.87 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 Portland
Town in Chautauqua County, New York, United States of America
| Population | 4,551 |
| Coordinates | 42.3797800, -79.4675500 |
| Altitude | 232 |
| Country | United States |
End: Portland (-79.46755, 42.37978)
Estimated Travel Time
Distance: 714 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 47m |
| 40 mph (64.37 km/h) | 11h 05m |
| 50 mph (80.47 km/h) | 08h 52m |
| 60 mph (96.56 km/h) | 07h 23m |
| 70 mph (112.65 km/h) | 06h 20m |
| 80 mph (129 km/h) | 05h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $62.78 | $125.56 |
| Mid-grade | $4.48 | $70.17 | $140.34 |
| Premium | $4.86 | $76.12 | $152.25 |
| Diesel | $4.69 | $73.51 | $147.02 |
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.