How far is Northumberland, NY from Smithtown, NY?
The driving distance from Northumberland, NY to Smithtown, NY is about 233 miles (375 km), with a travel time of about 04h 10m by car.
- The straight-line flight distance is about 158.2 miles (254.6 km).
- For a round trip, plan for roughly 08h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EST.
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 10m.
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.
Rain Showers
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Northumberland and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Northumberland and Smithtown.
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1
Start on the route
1.8 mi · 3 min
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2
Turn right onto Spring Street
1754 ft · 50 sec · Spring Street
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3
Continue on Lake Avenue
2.1 mi · 3 min · Lake Avenue
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4
Continue on Route 29
6.1 mi · 8 min · Route 29
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5
Continue on Lake Avenue
1.1 km · 2 min · Lake Avenue
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6
Turn left onto Henning Road
1.4 km · 2 min · Henning Road
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7
Turn left onto Union Avenue
828 ft · 24 sec · Union Avenue
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8
Take the ramp slight right
2401 ft · 59 sec
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9
Merge slight left onto Adirondack Northway
27.8 mi · 34 min · Adirondack Northway
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10
Keep slight right to continue on I 87 South, I 90: Boston, Albany, New York, Buffalo
1694 ft · 32 sec
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11
Continue on I 87 South, I 90 West: New York, Buffalo
2619 ft · 51 sec
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12
Keep slight right to continue on I 87 South: New York
117.8 mi · 2 hr 17 min
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13
Keep slight right to continue on I 287 South, NJ 17 South: New Jersey
1.5 km · 60 sec
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14
Continue straight
2496 ft · 39 sec
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15
Keep slight left to continue on NJ 17 South: Mahwah
14.1 mi · 19 min
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16
Take the exit slight right toward NJ 4, GSP South: Paterson, Fort Lee, New York
566 ft · 19 sec
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17
Keep slight left to continue on NJ 4 East: Fort Lee, New York
2455 ft · 1 min
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18
Merge slight left
1417 ft · 24 sec
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19
Continue straight
6.4 mi · 9 min
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20
Take the exit slight left toward I 95 North: George Washington Bridge
1124 ft · 18 sec
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21
Merge slight left
1.2 km · 55 sec
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22
Keep slight left
1.3 km · 1 min
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23
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
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24
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
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25
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
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26
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
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27
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
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28
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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29
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
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30
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
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31
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
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32
Merge slight left onto Long Island Expressway
14.2 mi · 20 min · Long Island Expressway
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33
Take the exit slight right toward N East: Hauppauge
2144 ft · 53 sec
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34
Merge slight left onto Northern State Parkway
13.7 mi · 19 min · Northern State Parkway
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35
Take the exit slight right toward SM North: Kings Park
1052 ft · 26 sec
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36
Merge slight left onto Sagtikos State Parkway
152 m · 6 sec · Sagtikos State Parkway
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37
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
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38
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
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39
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
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40
Continue on West Main Street
3144 ft · 55 sec · West Main Street
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41
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Northumberland and Smithtown.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
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.
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.
Rain Showers leaving Northumberland and Mostly Sunny near Smithtown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Northumberland to Smithtown?
The road trip is about 233 miles (375 km) and usually takes 04h 10m 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?
Clintondale is a useful midpoint, sitting about 116.3 miles from Northumberland and 116.8 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 158.2 miles (254.6 km), while the road route adds roughly 74.8 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 8:00 AM EST. If you want a more comfortable same-day return, try to leave by 8:40 AM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.28 one way or $70.56 round trip. Estimated CO2 is about 73.1 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Northumberland and Mostly Sunny near Smithtown.
Stop Ideas Near Clintondale
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 Clintondale.
Poughkeepsie station
Rhinecliff–Kingston station
Croton–Harmon station
Hudson
Flight Path Map
This map shows the direct air route between Northumberland and Smithtown. Straight-line distance: 158.19 mi (254.59 km).
#1 Northumberland
Town in the US state of New York
| Population | 5,059 |
| Coordinates | 43.1273000, -73.5881700 |
| Altitude | 34 |
| 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: 375 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 45m |
| 40 mph (64.37 km/h) | 05h 49m |
| 50 mph (80.47 km/h) | 04h 39m |
| 60 mph (96.56 km/h) | 03h 52m |
| 70 mph (112.65 km/h) | 03h 19m |
| 80 mph (129 km/h) | 02h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.29 | $35.28 | $70.56 |
| Mid-grade | $4.86 | $39.91 | $79.82 |
| Premium | $5.25 | $43.18 | $86.36 |
| Diesel | $6.46 | $53.08 | $106.17 |
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 · Nov 07, 2026