How far is Smithtown, NY from Thompson, NY?
The driving distance from Smithtown, NY to Thompson, NY is about 326.3 miles (525.1 km), with a travel time of about 07h 07m by car.
- The straight-line flight distance is about 243.8 miles (392.3 km).
- For a round trip, plan for roughly 14h 14m 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 07m.
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 Sullivan County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Smithtown and Thompson.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithtown and Thompson.
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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
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23
Keep slight left
3214 ft · 39 sec
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24
Keep slight left
559 ft · 9 sec
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25
Take the exit slight right toward I 95 South, NJTP South: Hackensack
1270 ft · 23 sec
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26
Keep slight left to continue on I 95 South, NJTP South: Hackensack
1884 ft · 29 sec
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27
Merge slight left onto New Jersey Turnpike
2 mi · 3 min · New Jersey Turnpike
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28
Take the exit slight right toward I 80 West: Paterson, Hackensack
1.3 km · 1 min
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29
Continue on Christopher Columbus Highway
68.2 mi · 1 hr 21 min · Christopher Columbus Highway
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30
Keep slight left to continue on Keystone Shortway
5.5 mi · 8 min · Keystone Shortway
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31
Keep slight left to continue on Keystone Shortway
11.9 mi · 16 min · Keystone Shortway
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32
Take the exit slight right toward I 380 North: Scranton
1.1 km · 46 sec
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33
Continue straight
27.7 mi · 31 min
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34
Merge slight right
58.1 mi · 1 hr 9 min
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35
Keep slight right to continue on I 81 North: Syracuse, Albany
1.8 mi · 2 min
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36
Keep slight left to continue on I 81 North: Syracuse
13.9 mi · 17 min
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37
Take the exit slight right toward NY 26 North: Whitney Point, Lisle
1480 ft · 33 sec
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38
Turn right
2902 ft · 43 sec
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39
At the end of the road, turn left
580 ft · 10 sec
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40
Continue straight
30.5 mi · 40 min
-
41
Keep slight right to continue on Seneca Way
678 ft · 19 sec · Seneca Way
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42
Continue on East Seneca Street
1.4 km · 2 min · East Seneca Street
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43
Turn right onto Taughannock Boulevard
103 m · 15 sec · Taughannock Boulevard
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44
Turn left onto West Buffalo Street
871 ft · 21 sec · West Buffalo Street
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45
Continue on Cliff Street
1.5 km · 2 min · Cliff Street
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46
Continue on Trumansburg Road
8.7 mi · 13 min · Trumansburg Road
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47
Continue on East Main Street
1.4 mi · 2 min · East Main Street
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48
Continue on Trumansburg Road
704 ft · 12 sec · Trumansburg Road
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49
Continue on State Highway 96
4 mi · 6 min · State Highway 96
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50
Turn right onto Powell Road
1.5 mi · 2 min · Powell Road
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51
Continue on County Road 141
1.4 km · 1 min · County Road 141
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52
Turn left onto State Highway 89
10.1 mi · 14 min · State Highway 89
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53
Turn left onto Ernsberger Road
2.4 mi · 4 min · Ernsberger Road
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54
At the end of the road, turn right onto Ovid Street
2.8 mi · 4 min · Ovid Street
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55
Turn left onto Townline Road
1.8 mi · 3 min · Townline Road
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56
Turn right onto State Highway 96
6.2 mi · 9 min · State Highway 96
-
57
Continue on Fayette Street
1281 ft · 37 sec · Fayette Street
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58
Turn right onto West River Street
108 m · 16 sec · West River Street
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59
Turn left onto Washington Street
1639 ft · 28 sec · Washington Street
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60
Continue on South Virginia Street
1.4 km · 1 min · South Virginia Street
-
61
Turn left onto North Road
906 ft · 15 sec · North Road
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62
Continue on State Highway 96
6 mi · 9 min · State Highway 96
-
63
Take the ramp slight right toward I 90: Lyons, Thruway
1447 ft · 40 sec
-
64
Merge slight left
2.9 mi · 4 min
-
65
Turn right onto Avery Road
1.2 km · 3 min · Avery Road
-
66
Turn left onto Townline Road
1.4 km · 3 min · Townline Road
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67
Arrive at your destination
0 m · 1 sec · Townline Road
Car Route Details
A richer read on the saved driving route between Smithtown and Thompson.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Christopher Columbus Highway
Continue on Christopher Columbus Highway
68.2 mi · 01h 21m
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 Cloudy leaving Smithtown and Mostly Sunny near Thompson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smithtown to Thompson?
The road trip is about 326.3 miles (525.1 km) and usually takes 07h 07m 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?
Tusten is a useful midpoint, sitting about 162.6 miles from Smithtown and 163.7 miles from Thompson.
How much longer is the road route than the straight-line distance?
The direct path is about 243.8 miles (392.3 km), while the road route adds roughly 82.5 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 $51.20 one way or $102.39 round trip. Estimated CO2 is about 102.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Smithtown and Mostly Sunny near Thompson.
Stop Ideas Near Tusten
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 Tusten.
Scranton, PA
White Haven, PA
Wilkes-Barre, PA
Poughkeepsie station
Flight Path Map
This map shows the direct air route between Smithtown and Thompson. Straight-line distance: 243.74 mi (392.26 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 Thompson
Town in Sullivan County, New York, United States
| Population | 15,082 |
| Coordinates | 43.0031200, -76.9638500 |
| Altitude | 132 |
| Country | United States |
End: Thompson (-76.96385, 43.00312)
Estimated Travel Time
Distance: 525 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 52m |
| 40 mph (64.37 km/h) | 08h 09m |
| 50 mph (80.47 km/h) | 06h 31m |
| 60 mph (96.56 km/h) | 05h 26m |
| 70 mph (112.65 km/h) | 04h 39m |
| 80 mph (129 km/h) | 04h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $51.20 | $102.39 |
| Mid-grade | $4.98 | $57.34 | $114.69 |
| Premium | $5.38 | $61.95 | $123.89 |
| Diesel | $6.51 | $74.92 | $149.84 |
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