How far is Islip, NY from Harrietstown, NY?
The driving distance from Islip, NY to Harrietstown, NY is about 339.7 miles (546.7 km), with a travel time of about 07h 10m by car.
- The straight-line flight distance is about 257.9 miles (415.1 km).
- For a round trip, plan for roughly 14h 20m 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 10m.
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 Greene County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Islip and Harrietstown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip and Harrietstown.
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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 right to continue on NJ 4 West: Paramus
970 ft · 24 sec
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35
Merge slight right
6.7 mi · 9 min
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36
Take the exit straight toward GSP South, NJ 17 South, GSP North, NJ 17 North: Grand State Plaza, Newark, Mahwah
951 ft · 26 sec
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37
Keep slight right to continue on NJ 17 North: Mahwah
1302 ft · 37 sec
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38
Merge slight left
3.3 mi · 4 min
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39
Continue straight
7.3 mi · 10 min
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40
Continue straight
1.2 km · 50 sec
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41
Continue straight
3.3 mi · 4 min
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42
Continue straight
877 ft · 11 sec
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43
Keep slight left to continue on I 87 North, NY 17 North, New York State Thruway North: Albany
111.7 mi · 2 hr 9 min
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44
Take the exit slight right toward I 787, US 9W: Albany, Troy
1351 ft · 50 sec
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45
Continue straight
9 mi · 12 min
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46
Keep slight left
1863 ft · 29 sec
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47
Take the exit slight right toward NY 7 West: Schenectady, Saratoga Springs
1472 ft · 50 sec
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48
Merge slight left
3.1 mi · 4 min
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49
Take the exit slight right toward I 87 North: Saratoga Springs, Glens Falls
1.3 km · 2 min
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50
Merge slight left onto Adirondack Northway
97.7 mi · 1 hr 54 min · Adirondack Northway
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51
Take the exit slight right toward US 9, NY 73: Keene, Keene Valley
1346 ft · 31 sec
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52
Turn left onto US Highway 9
2.2 mi · 3 min · US Highway 9
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53
Keep slight left to continue on State Highway 73
11.5 mi · 17 min · State Highway 73
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54
Continue on State Highway 9N
1.8 mi · 3 min · State Highway 9N
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55
Keep slight left to continue on State Highway 73
7.2 mi · 10 min · State Highway 73
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56
Continue on Cascade Road
5.3 mi · 8 min · Cascade Road
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57
Turn slight left onto Old Military Road
3.6 mi · 6 min · Old Military Road
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58
At the end of the road, turn left onto Saranac-Placid Road
4.9 mi · 8 min · Saranac-Placid Road
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59
Continue on Lake Flower Avenue
1.2 mi · 3 min · Lake Flower Avenue
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60
At the end of the road, turn left onto River Street
1370 ft · 42 sec · River Street
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61
Turn right onto Church Street
2254 ft · 51 sec · Church Street
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62
At the end of the road, turn left onto Bloomingdale Avenue
150 m · 12 sec · Bloomingdale Avenue
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63
Turn right onto Broadway Street
2778 ft · 49 sec · Broadway Street
-
64
Continue on Lake Colby Drive
3 mi · 4 min · Lake Colby Drive
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65
Continue on Harrietstown Road
1.7 mi · 3 min · Harrietstown Road
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66
Arrive at your destination
0 m · 1 sec · Harrietstown Road
Car Route Details
A richer read on the saved driving route between Islip and Harrietstown.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 87 North
Keep slight left to continue on I 87 North, NY 17 North, New York State Thruway North: Albany
112 mi · 02h 09m
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 Showers And Thunderstorms near Harrietstown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Islip to Harrietstown?
The road trip is about 339.7 miles (546.7 km) and usually takes 07h 10m 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?
New Baltimore is a useful midpoint, sitting about 169.9 miles from Islip and 169.9 miles from Harrietstown.
How much longer is the road route than the straight-line distance?
The direct path is about 257.9 miles (415.1 km), while the road route adds roughly 81.8 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 $48.07 one way or $96.14 round trip. Estimated CO2 is about 106.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Islip and Showers And Thunderstorms near Harrietstown.
Stop Ideas Near New Baltimore
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 New Baltimore.
Hudson
Albany–Rensselaer
Schenectady
Joseph Scelsi Intermodal Transportation Center
Flight Path Map
This map shows the direct air route between Islip and Harrietstown. Straight-line distance: 257.92 mi (415.09 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 Harrietstown
Town of the United States
| Population | 5,423 |
| Coordinates | 44.3970000, -74.1584900 |
| Altitude | 565 |
| Country | United States |
End: Harrietstown (-74.15849, 44.397)
Estimated Travel Time
Distance: 547 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 19m |
| 40 mph (64.37 km/h) | 08h 29m |
| 50 mph (80.47 km/h) | 06h 47m |
| 60 mph (96.56 km/h) | 05h 39m |
| 70 mph (112.65 km/h) | 04h 51m |
| 80 mph (129 km/h) | 04h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $48.07 | $96.14 |
| Mid-grade | $4.48 | $53.73 | $107.45 |
| Premium | $4.86 | $58.28 | $116.57 |
| Diesel | $4.69 | $56.28 | $112.56 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.