How far is Williamson, NY from Smithtown, NY?
The driving distance from Williamson, NY to Smithtown, NY is about 358.2 miles (576.4 km), with a travel time of about 06h 06m by car.
- The straight-line flight distance is about 261.8 miles (421.4 km).
- For a round trip, plan for roughly 12h 12m 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 06h 06m.
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.
City in Steuben County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Williamson and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Williamson and Smithtown.
-
1
Start on Main Street
2 m · 5 sec · Main Street
-
2
Turn right onto Lake Avenue
3255 ft · 58 sec · Lake Avenue
-
3
Turn right
22 mi · 30 min
-
4
Turn right onto Ridge Road
2.2 mi · 3 min · Ridge Road
-
5
Turn slight right onto State Route 370
2.1 mi · 3 min · State Route 370
-
6
Continue on State Highway 370
7.9 mi · 11 min · State Highway 370
-
7
Continue on West Main Street
3.6 mi · 8 min · West Main Street
-
8
Continue on State Route 370
1.7 mi · 2 min · State Route 370
-
9
Continue on Main Street
1.1 km · 54 sec · Main Street
-
10
Continue on West Genesee Road
5.7 mi · 8 min · West Genesee Road
-
11
Take the exit left
5.9 mi · 7 min
-
12
Continue straight
8.7 mi · 11 min
-
13
Take the exit slight right toward I 81 South: Binghamton
1243 ft · 30 sec
-
14
Merge slight left
2.8 mi · 4 min
-
15
Continue straight
1.2 km · 49 sec
-
16
Continue straight
72.6 mi · 1 hr 25 min
-
17
Keep slight right to continue on I 81 South: Scranton
53.4 mi · 1 hr 3 min
-
18
Keep slight right to continue on I 84 East, I 380 South, US 6 East: Carbondale, Mt Pocono
1.2 km · 1 min
-
19
Continue on I 84 East, I 380 South: Mount Pocono, Milford
3.7 mi · 5 min
-
20
Keep slight right to continue on I 380 South: Mount Pocono
23.6 mi · 26 min
-
21
Keep slight left to continue on I 80 East: Stroudsburg
1 mi · 1 min
-
22
Merge slight right onto Keystone Shortway
80 mi · 1 hr 37 min · Keystone Shortway
-
23
Keep slight right to continue on Christopher Columbus Highway
5.5 mi · 6 min · Christopher Columbus Highway
-
24
Keep slight left to continue on I 95 North: George Washington Bridge, New York City
1503 ft · 23 sec
-
25
Keep slight right to continue on Leonia, Teaneck
2128 ft · 38 sec
-
26
Turn right onto Leonia
1032 ft · 35 sec
-
27
Turn straight onto Degraw Avenue
138 m · 9 sec · Degraw Avenue
-
28
Continue on Fort Lee Road
1.1 mi · 2 min · Fort Lee Road
-
29
Continue on Main Street
143 m · 13 sec · Main Street
-
30
Take the ramp left toward George Washington Bridge
144 m · 13 sec
-
31
Merge slight left onto Bergen Boulevard
1552 ft · 29 sec · Bergen Boulevard
-
32
Take the exit slight left toward George Washington Bridge Upper Level
95 m · 5 sec
-
33
Merge slight left
1649 ft · 20 sec
-
34
Keep slight left
1.3 km · 1 min
-
35
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
-
36
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
-
37
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
-
38
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
-
39
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
-
40
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
-
41
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
-
42
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
-
43
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
-
44
Merge slight left onto Long Island Expressway
14.2 mi · 20 min · Long Island Expressway
-
45
Take the exit slight right toward N East: Hauppauge
2144 ft · 53 sec
-
46
Merge slight left onto Northern State Parkway
13.7 mi · 19 min · Northern State Parkway
-
47
Take the exit slight right toward SM North: Kings Park
1052 ft · 26 sec
-
48
Merge slight left onto Sagtikos State Parkway
152 m · 6 sec · Sagtikos State Parkway
-
49
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
-
50
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
-
51
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
-
52
Continue on West Main Street
3144 ft · 55 sec · West Main Street
-
53
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Williamson and Smithtown.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Keystone Shortway
Merge slight right onto Keystone Shortway
80 mi · 01h 37m
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.
Mostly Cloudy leaving Williamson 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 Williamson to Smithtown?
The road trip is about 358.2 miles (576.4 km) and usually takes 06h 06m 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?
Riverside is a useful midpoint, sitting about 178 miles from Williamson and 180.1 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 261.8 miles (421.4 km), while the road route adds roughly 96.4 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 $56.22 one way or $112.45 round trip. Estimated CO2 is about 112.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Williamson and Partly Cloudy near Smithtown.
Stop Ideas Near Riverside
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 Riverside.
Scranton, PA
Wilkes-Barre, PA
White Haven, PA
Flight Path Map
This map shows the direct air route between Williamson and Smithtown. Straight-line distance: 261.85 mi (421.41 km).
#1 Williamson
Town in New York, United States
| Population | 6,688 |
| Coordinates | 43.2239500, -77.1860900 |
| Altitude | 135 |
| 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: 576 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 56m |
| 40 mph (64.37 km/h) | 08h 57m |
| 50 mph (80.47 km/h) | 07h 09m |
| 60 mph (96.56 km/h) | 05h 58m |
| 70 mph (112.65 km/h) | 05h 07m |
| 80 mph (129 km/h) | 04h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $56.22 | $112.45 |
| Mid-grade | $4.98 | $62.97 | $125.94 |
| Premium | $5.38 | $68.03 | $136.06 |
| Diesel | $6.51 | $82.27 | $164.55 |
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