How far is Larchmont, NY from Smithtown, NY?
The driving distance from Larchmont, NY to Smithtown, NY is about 51.3 miles (82.6 km), with a travel time of about 01h 07m by car.
- The straight-line flight distance is about 29.2 miles (47 km).
- For a round trip, plan for roughly 02h 14m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 07m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Nassau County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Larchmont and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Larchmont and Smithtown.
-
1
Start on Boston Post Road
1.4 km · 2 min · Boston Post Road
-
2
Continue on East Main Street
3144 ft · 1 min · East Main Street
-
3
Continue on Huguenot Street
1211 ft · 25 sec · Huguenot Street
-
4
Turn right onto River Street
1649 ft · 37 sec · River Street
-
5
Continue on Cedar Street
113 m · 7 sec · Cedar Street
-
6
Take the ramp straight toward I 95 South: New York
853 ft · 21 sec
-
7
Merge slight left onto New England Thruway
5.8 mi · 8 min · New England Thruway
-
8
Continue on Bruckner Expressway
1.3 mi · 2 min · Bruckner Expressway
-
9
Keep slight left to continue on Throgs Neck Expressway
2.2 mi · 3 min · Throgs Neck Expressway
-
10
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
-
11
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
-
12
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
-
13
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
-
14
Merge slight left onto Long Island Expressway
14.2 mi · 20 min · Long Island Expressway
-
15
Take the exit slight right toward N East: Hauppauge
2144 ft · 53 sec
-
16
Merge slight left onto Northern State Parkway
13.7 mi · 19 min · Northern State Parkway
-
17
Take the exit slight right toward SM North: Kings Park
1052 ft · 26 sec
-
18
Merge slight left onto Sagtikos State Parkway
152 m · 6 sec · Sagtikos State Parkway
-
19
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
-
20
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
-
21
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
-
22
Continue on West Main Street
3144 ft · 55 sec · West Main Street
-
23
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Larchmont 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.
Long Island Expressway
Merge slight left onto Long Island Expressway
14.2 mi · 00h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Larchmont 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 Larchmont to Smithtown?
The road trip is about 51.3 miles (82.6 km) and usually takes 01h 07m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
East Hills is a useful midpoint, sitting about 26 miles from Larchmont and 25.3 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 29.2 miles (47 km), while the road route adds roughly 22.1 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.05 one way or $16.10 round trip. Estimated CO2 is about 16.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Larchmont and Partly Cloudy near Smithtown.
Stop Ideas Near East Hills
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Flushing Town Hall
Queens City Clerk
New Rochelle City Court
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to East Hills.
New Rochelle station
Yonkers station
Stamford Transportation Center
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Larchmont and Smithtown. Straight-line distance: 29.21 mi (47.01 km).
#1 Larchmont
Village in Westchester County, New York
| Population | 6,114 |
| Coordinates | 40.9278800, -73.7518000 |
| Altitude | 16 |
| 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: 83 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 42m |
| 40 mph (64.37 km/h) | 01h 16m |
| 50 mph (80.47 km/h) | 01h 01m |
| 60 mph (96.56 km/h) | 00h 51m |
| 70 mph (112.65 km/h) | 00h 43m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $8.05 | $16.10 |
| Mid-grade | $4.98 | $9.02 | $18.03 |
| Premium | $5.38 | $9.74 | $19.48 |
| Diesel | $6.51 | $11.78 | $23.56 |
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