How far is Rockville Centre, NY from Smithtown, NY?
The driving distance from Rockville Centre, NY to Smithtown, NY is about 34.2 miles (55.1 km), with a travel time of about 00h 45m by car.
- The straight-line flight distance is about 26.8 miles (43.1 km).
- For a round trip, plan for roughly 01h 30m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 45m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census-designated place in Suffolk County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Rockville Centre and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockville Centre and Smithtown.
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1
Start on Maple Avenue
14 m · 7 sec · Maple Avenue
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2
Turn right onto Morris Avenue
595 ft · 28 sec · Morris Avenue
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3
Turn left onto Sunrise Highway
8 mi · 10 min · Sunrise Highway
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4
Take the exit slight right toward NY 135 North: Syosset
909 ft · 22 sec
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5
Merge slight left onto Seaford-Oyster Bay Expressway
1.7 mi · 2 min · Seaford-Oyster Bay Expressway
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6
Take the exit slight right toward SO East: East Islip
1657 ft · 47 sec
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7
Merge slight left onto Southern State Parkway
11 mi · 14 min · Southern State Parkway
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8
Keep slight left to continue on Southern State Parkway
1.3 km · 1 min · Southern State Parkway
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9
Keep slight left to continue on Sagtikos State Parkway
5.4 mi · 7 min · Sagtikos State Parkway
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10
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
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11
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
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12
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
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13
Continue on West Main Street
3144 ft · 55 sec · West Main Street
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14
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Rockville Centre and Smithtown.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Southern State Parkway
Merge slight left onto Southern State Parkway
11 mi · 00h 14m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Partly Cloudy leaving Rockville Centre 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 Rockville Centre to Smithtown?
The road trip is about 34.2 miles (55.1 km) and usually takes 00h 45m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
North Lindenhurst is a useful midpoint, sitting about 16.9 miles from Rockville Centre and 17.3 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 26.8 miles (43.1 km), while the road route adds roughly 7.4 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.38 one way or $10.76 round trip. Estimated CO2 is about 10.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Rockville Centre and Partly Cloudy near Smithtown.
Stop Ideas Near North Lindenhurst
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Town of Babylon History Museum at Old Town Hall
Babylon Town Hall Annex
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to North Lindenhurst.
Stamford Transportation Center
New Rochelle station
Yonkers station
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Rockville Centre and Smithtown. Straight-line distance: 26.78 mi (43.1 km).
#1 Rockville Centre
Village in Nassau County, New York, United States
| Population | 24,398 |
| Coordinates | 40.6587100, -73.6412400 |
| Altitude | 9 |
| 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: 55 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 08m |
| 40 mph (64.37 km/h) | 00h 51m |
| 50 mph (80.47 km/h) | 00h 41m |
| 60 mph (96.56 km/h) | 00h 34m |
| 70 mph (112.65 km/h) | 00h 29m |
| 80 mph (129 km/h) | 00h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $5.38 | $10.76 |
| Mid-grade | $4.98 | $6.03 | $12.06 |
| Premium | $5.38 | $6.51 | $13.02 |
| Diesel | $6.51 | $7.88 | $15.75 |
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