How far is Smithtown, NY from Northumberland, NY?
The driving distance from Smithtown, NY to Northumberland, NY is about 231.8 miles (373.1 km), with a travel time of about 04h 55m by car.
- The straight-line flight distance is about 158.2 miles (254.6 km).
- For a round trip, plan for roughly 09h 50m 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 55m.
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
Rain Showers
Driving Route Map
The map below follows the saved road route between Smithtown and Northumberland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithtown and Northumberland.
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1
Start on West Main Street
2964 ft · 52 sec · West Main Street
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2
Keep slight left to continue on West Main Street
55 m · 5 sec · West Main Street
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3
Continue on Jericho Turnpike
4 mi · 6 min · Jericho Turnpike
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4
Take the ramp slight right toward SM South: Bay Shore
1110 ft · 27 sec
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5
Merge slight left onto Sunken Meadow State Parkway
1.9 mi · 2 min · Sunken Meadow State Parkway
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6
Continue on Sagtikos State Parkway
1.2 km · 50 sec · Sagtikos State Parkway
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7
Take the exit slight right toward I 495 West: New York
688 ft · 17 sec
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8
Keep slight left to continue on I 495 West: New York
955 ft · 23 sec
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9
Turn straight onto LIE North Service Road
1987 ft · 34 sec · LIE North Service Road
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10
Turn straight onto North Service Road
770 ft · 14 sec · North Service Road
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11
Take the ramp slight left toward I 495 West: New York
879 ft · 22 sec
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12
Merge slight left onto Long Island Expressway
24.8 mi · 34 min · Long Island Expressway
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13
Take the exit slight right toward Cross Island Parkway, Whitestone Bridge, Kennedy Airport
1267 ft · 27 sec
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14
Keep slight right to continue on Cross Island Parkway North, Whitestone Bridge
1604 ft · 38 sec
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15
Merge slight left onto Cross Island Parkway
3.1 mi · 5 min · Cross Island Parkway
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16
Take the exit slight right toward I 295 North: Throgs Neck Bridge, Bronx, New England
2905 ft · 1 min
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17
Merge slight left onto Throgs Neck Bridge
1.8 mi · 3 min · Throgs Neck Bridge
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18
Continue on Throgs Neck Expressway
1.1 km · 1 min · Throgs Neck Expressway
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19
Keep slight left to continue on Cross Bronx Expressway
6.6 mi · 9 min · Cross Bronx Expressway
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20
Keep slight left to continue on Trans-Manhattan Expressway
1.1 km · 1 min · Trans-Manhattan Expressway
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21
Continue on George Washington Bridge (upper level)
3167 ft · 60 sec · George Washington Bridge (upper level)
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22
Continue straight
2659 ft · 48 sec
-
23
Keep slight left
3214 ft · 39 sec
-
24
Keep slight left
559 ft · 9 sec
-
25
Take the exit slight right toward I 95 South, NJTP South: Hackensack
1270 ft · 23 sec
-
26
Keep slight right to continue on NJ 4 West: Paramus
970 ft · 24 sec
-
27
Merge slight right
6.7 mi · 9 min
-
28
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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29
Keep slight right to continue on NJ 17 North: Mahwah
1302 ft · 37 sec
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30
Merge slight left
3.3 mi · 4 min
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31
Continue straight
7.3 mi · 10 min
-
32
Continue straight
1.2 km · 50 sec
-
33
Continue straight
3.3 mi · 4 min
-
34
Continue straight
877 ft · 11 sec
-
35
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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36
Take the exit slight right toward I 787, US 9W: Albany, Troy
1351 ft · 50 sec
-
37
Continue straight
9 mi · 12 min
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38
Keep slight left
1863 ft · 29 sec
-
39
Take the exit slight right toward NY 7 West: Schenectady, Saratoga Springs
1472 ft · 50 sec
-
40
Merge slight left
3.1 mi · 4 min
-
41
Take the exit slight right toward I 87 North: Saratoga Springs, Glens Falls
1.3 km · 2 min
-
42
Merge slight left onto Adirondack Northway
22.2 mi · 26 min · Adirondack Northway
-
43
Take the exit slight right toward NY 9P, NY 29: Saratoga Springs, Schuylerville
1366 ft · 39 sec
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44
Keep slight right
1008 ft · 25 sec
-
45
Turn straight onto Union Avenue
2038 ft · 43 sec · Union Avenue
-
46
Turn right onto Henning Road
1.4 km · 2 min · Henning Road
-
47
Turn right onto Lake Avenue
1.1 km · 1 min · Lake Avenue
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48
Continue on Route 29
6.1 mi · 8 min · Route 29
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49
Continue on Lake Avenue
2.1 mi · 3 min · Lake Avenue
-
50
Continue on Spring Street
1754 ft · 57 sec · Spring Street
-
51
Turn left onto Broad Street
1.8 mi · 3 min · Broad Street
-
52
Keep slight right
13 m · 1 sec
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53
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Smithtown and Northumberland.
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 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.
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 Smithtown and Rain Showers near Northumberland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smithtown to Northumberland?
The road trip is about 231.8 miles (373.1 km) and usually takes 04h 55m 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 115.8 miles from Smithtown and 116.1 miles from Northumberland.
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 73.6 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 7:10 AM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.11 one way or $70.22 round trip. Estimated CO2 is about 72.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Smithtown and Rain Showers near Northumberland.
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 Smithtown and Northumberland. Straight-line distance: 158.19 mi (254.59 km).
#1 Smithtown
Census-designated place in Suffolk County, New York
| Population | 110,876 |
| Coordinates | 40.8559300, -73.2006700 |
| Altitude | 18 |
| Country | United States |
#2 Northumberland
Town in the US state of New York
| Population | 5,059 |
| Coordinates | 43.1273000, -73.5881700 |
| Altitude | 34 |
| Country | United States |
End: Northumberland (-73.58817, 43.1273)
Estimated Travel Time
Distance: 373 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 43m |
| 40 mph (64.37 km/h) | 05h 47m |
| 50 mph (80.47 km/h) | 04h 38m |
| 60 mph (96.56 km/h) | 03h 51m |
| 70 mph (112.65 km/h) | 03h 18m |
| 80 mph (129 km/h) | 02h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.29 | $35.11 | $70.22 |
| Mid-grade | $4.86 | $39.71 | $79.43 |
| Premium | $5.25 | $42.97 | $85.94 |
| Diesel | $6.46 | $52.83 | $105.65 |
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