How far is Riverhead, NY from Smithtown, NY?
The driving distance from Riverhead, NY to Smithtown, NY is about 32.2 miles (51.8 km), with a travel time of about 00h 40m by car.
- The straight-line flight distance is about 28.5 miles (45.8 km).
- For a round trip, plan for roughly 01h 21m 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 40m.
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.
Sunny
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Riverhead and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverhead and Smithtown.
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1
Start on East Main Street
43 m · 11 sec · East Main Street
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2
Turn left onto Peconic Avenue
635 ft · 17 sec · Peconic Avenue
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3
Turn right onto Nugent Drive
4.1 mi · 6 min · Nugent Drive
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4
Continue on Edwards Avenue
1354 ft · 34 sec · Edwards Avenue
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5
Turn left onto I 495 West: New York
89 m · 6 sec
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6
Continue on I 495 West: New York
1483 ft · 32 sec
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7
Merge slight left onto Long Island Expressway
17.2 mi · 23 min · Long Island Expressway
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8
Take the exit slight right toward CR 97: Blue Point, Stony Brook, Nicolls Road
1048 ft · 18 sec
-
9
Turn straight onto Express Drive North
703 ft · 13 sec · Express Drive North
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10
Take the ramp slight right toward CR 97 North: Stony Brook
1168 ft · 32 sec
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11
Merge slight left onto Nicolls Road
2.6 mi · 4 min · Nicolls Road
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12
Take the exit slight right toward NY 25: Riverhead, Smithtown
713 ft · 20 sec
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13
Keep slight left to continue on NY 25 west: Riverhead, Smithtown
547 ft · 18 sec
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14
Turn slight left onto Middle Country Road
5.8 mi · 9 min · Middle Country Road
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15
Continue on East Main Street
1.3 mi · 2 min · East Main Street
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16
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Riverhead 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.
Long Island Expressway
Merge slight left onto Long Island Expressway
17.2 mi · 00h 24m
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.
Sunny leaving Riverhead 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 Riverhead to Smithtown?
The road trip is about 32.2 miles (51.8 km) and usually takes 00h 40m 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?
Yaphank is a useful midpoint, sitting about 16.2 miles from Riverhead and 15.9 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 28.5 miles (45.8 km), while the road route adds roughly 3.7 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 7:08 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.07 one way or $10.14 round trip. Estimated CO2 is about 10.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Riverhead and Partly Cloudy near Smithtown.
Stop Ideas Near Yaphank
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 Yaphank.
Bridgeport
Union Station
Stamford Transportation Center
Old Saybrook station
Flight Path Map
This map shows the direct air route between Riverhead and Smithtown. Straight-line distance: 28.45 mi (45.79 km).
#1 Riverhead
Town in New York
| Population | 33,434 |
| Coordinates | 40.9170400, -72.6620400 |
| Altitude | 4 |
| 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: 52 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 04m |
| 40 mph (64.37 km/h) | 00h 48m |
| 50 mph (80.47 km/h) | 00h 38m |
| 60 mph (96.56 km/h) | 00h 32m |
| 70 mph (112.65 km/h) | 00h 27m |
| 80 mph (129 km/h) | 00h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $5.07 | $10.14 |
| Mid-grade | $4.98 | $5.68 | $11.36 |
| Premium | $5.38 | $6.14 | $12.27 |
| Diesel | $6.51 | $7.42 | $14.84 |
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