How far is Porter, NY from Smithtown, NY?
The driving distance from Porter, NY to Smithtown, NY is about 246.6 miles (396.9 km), with a travel time of about 04h 39m by car.
- The straight-line flight distance is about 168.5 miles (271.1 km).
- For a round trip, plan for roughly 09h 19m 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 04h 39m.
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.
Census-designated place in Ulster County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Porter and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Porter and Smithtown.
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1
Start on South Grimes Hill Road
39 m · 10 sec · South Grimes Hill Road
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2
Turn right onto State Highway 22
8.3 mi · 11 min · State Highway 22
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3
Continue on North Main Street
1.9 mi · 5 min · North Main Street
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4
Continue on State Highway 22
1.3 mi · 2 min · State Highway 22
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5
Turn right onto State Highway 29
10.3 mi · 16 min · State Highway 29
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6
At the end of the road, turn left onto Main Street
18 m · 5 sec · Main Street
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7
Turn right onto Hill Street
1.2 mi · 3 min · Hill Street
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8
Continue on Hegeman Bridge Road
3248 ft · 2 min · Hegeman Bridge Road
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9
At the end of the road, turn left
22.3 mi · 34 min
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10
Turn right onto Plank Road
142 m · 19 sec · Plank Road
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11
Turn left onto Oakwood Avenue
3.4 mi · 7 min · Oakwood Avenue
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12
Continue on 10th Street
119 m · 14 sec · 10th Street
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13
Turn right onto Hoosick Street
156 m · 17 sec · Hoosick Street
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14
Turn right
2780 ft · 43 sec
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15
Keep slight right
9.4 mi · 13 min
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16
Continue on I 87 Toll: New York State Thruway
3231 ft · 1 min
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17
Keep slight left to continue on I 87 South: New York, Massachusetts Turnpike, Exits 22-1
2725 ft · 1 min
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18
Merge slight left onto New York State Thruway
111.2 mi · 2 hr 8 min · New York State Thruway
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19
Keep slight right to continue on I 287 South, NJ 17 South: New Jersey
1.5 km · 60 sec
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20
Continue straight
2496 ft · 39 sec
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21
Keep slight left to continue on NJ 17 South: Mahwah
14.1 mi · 19 min
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22
Take the exit slight right toward NJ 4, GSP South: Paterson, Fort Lee, New York
566 ft · 19 sec
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23
Keep slight left to continue on NJ 4 East: Fort Lee, New York
2455 ft · 1 min
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24
Merge slight left
1417 ft · 24 sec
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25
Continue straight
6.4 mi · 9 min
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26
Take the exit slight left toward I 95 North: George Washington Bridge
1124 ft · 18 sec
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27
Merge slight left
1.2 km · 55 sec
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28
Keep slight left
1.3 km · 1 min
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29
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
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30
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
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31
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
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32
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
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33
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
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34
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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35
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
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36
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
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37
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
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38
Merge slight left onto Long Island Expressway
14.2 mi · 20 min · Long Island Expressway
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39
Take the exit slight right toward N East: Hauppauge
2144 ft · 53 sec
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40
Merge slight left onto Northern State Parkway
13.7 mi · 19 min · Northern State Parkway
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41
Take the exit slight right toward SM North: Kings Park
1052 ft · 26 sec
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42
Merge slight left onto Sagtikos State Parkway
152 m · 6 sec · Sagtikos State Parkway
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43
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
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44
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
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45
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
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46
Continue on West Main Street
3144 ft · 55 sec · West Main Street
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47
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Porter and Smithtown.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
New York State Thruway
Merge slight left onto New York State Thruway
111 mi · 02h 08m
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.
Mostly Sunny leaving Porter and Partly Cloudy near Smithtown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Porter to Smithtown?
The road trip is about 246.6 miles (396.9 km) and usually takes 04h 39m 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?
Tillson is a useful midpoint, sitting about 122.3 miles from Porter and 124.3 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 168.5 miles (271.1 km), while the road route adds roughly 78.1 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 7:40 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $38.70 one way or $77.40 round trip. Estimated CO2 is about 77.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Porter and Partly Cloudy near Smithtown.
Stop Ideas Near Tillson
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 Tillson.
Rhinecliff–Kingston station
Poughkeepsie station
Hudson
Croton–Harmon station
Flight Path Map
This map shows the direct air route between Porter and Smithtown. Straight-line distance: 168.48 mi (271.14 km).
#1 Porter
Town in Niagara County, New York, United States
| Population | 6,503 |
| Coordinates | 43.2936900, -73.2776100 |
| Altitude | 176 |
| Country | United States |
#2 Smithtown
Census-designated place in Suffolk County, New York
| Population | 110,876 |
| Coordinates | 40.8559300, -73.2006700 |
| Altitude | 18 |
| Country | United States |
End: West Main Street (-73.200729, 40.855811)
Estimated Travel Time
Distance: 397 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 13m |
| 40 mph (64.37 km/h) | 06h 09m |
| 50 mph (80.47 km/h) | 04h 55m |
| 60 mph (96.56 km/h) | 04h 06m |
| 70 mph (112.65 km/h) | 03h 31m |
| 80 mph (129 km/h) | 03h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $38.70 | $77.40 |
| Mid-grade | $4.98 | $43.34 | $86.69 |
| Premium | $5.38 | $46.82 | $93.65 |
| Diesel | $6.51 | $56.63 | $113.26 |
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 · Oct 15, 2026