How far is Union, NY from Smithtown, NY?
The driving distance from Union, NY to Smithtown, NY is about 293.9 miles (473 km), with a travel time of about 05h 02m by car.
- The straight-line flight distance is about 196 miles (315.5 km).
- For a round trip, plan for roughly 10h 05m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 02m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Union and Smithtown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union and Smithtown.
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1
Start on Kiley Road
22 m · 4 sec · Kiley Road
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2
Turn right onto Delphi Road
1.1 km · 2 min · Delphi Road
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3
Turn right onto Rippleton Road
1.4 mi · 2 min · Rippleton Road
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4
Continue on State Route 13
1300 ft · 26 sec · State Route 13
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5
Turn left onto Main Street
2491 ft · 1 min · Main Street
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6
Continue on McKinley Street
1.1 mi · 2 min · McKinley Street
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7
Continue on State Route 13
1.9 mi · 3 min · State Route 13
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8
Continue on State Route 80
6.1 mi · 9 min · State Route 80
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9
Continue on State Route 80
2.7 mi · 4 min · State Route 80
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10
Continue on State Highway 26
2.2 mi · 3 min · State Highway 26
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11
Turn left onto County Road 16
11.8 mi · 17 min · County Road 16
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12
Turn left
1.2 mi · 2 min
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13
Turn left onto County Road 44
2.8 mi · 4 min · County Road 44
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14
Turn right onto State Highway 12
1.2 mi · 2 min · State Highway 12
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15
Continue on North Broad Street
2925 ft · 2 min · North Broad Street
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16
Turn left onto Rexford Street
8.3 mi · 10 min · Rexford Street
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17
Turn right onto State Highway 8
17.8 mi · 20 min · State Highway 8
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18
Continue on Airport Road
2268 ft · 29 sec · Airport Road
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19
Continue on State Highway 8
19 mi · 22 min · State Highway 8
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20
Continue on Oak Street
1409 ft · 18 sec · Oak Street
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21
Continue on State Highway 10
2251 ft · 45 sec · State Highway 10
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22
Take the exit left toward NY 17 East
1287 ft · 27 sec
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23
Merge slight left
105.1 mi · 2 hr 11 min
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24
Keep slight left to continue on I 87, NYST: Albany, New York City
1.1 km · 60 sec
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25
Keep slight right to continue on I 87 Toll South: New York City
1.5 km · 2 min
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26
Merge slight left onto New York State Thruway
13.7 mi · 16 min · New York State Thruway
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27
Keep slight right to continue on I 287 South, NJ 17 South: New Jersey
1.5 km · 60 sec
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28
Continue straight
2496 ft · 39 sec
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29
Keep slight left to continue on NJ 17 South: Mahwah
14.1 mi · 19 min
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30
Take the exit slight right toward NJ 4, GSP South: Paterson, Fort Lee, New York
566 ft · 19 sec
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31
Keep slight left to continue on NJ 4 East: Fort Lee, New York
2455 ft · 1 min
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32
Merge slight left
1417 ft · 24 sec
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33
Continue straight
6.4 mi · 9 min
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34
Take the exit slight left toward I 95 North: George Washington Bridge
1124 ft · 18 sec
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35
Merge slight left
1.2 km · 55 sec
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36
Keep slight left
1.3 km · 1 min
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37
Continue on George Washington Bridge (upper level)
3174 ft · 1 min · George Washington Bridge (upper level)
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38
Continue on Trans-Manhattan Expressway
1.2 km · 1 min · Trans-Manhattan Expressway
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39
Continue on Cross Bronx Expressway
4.7 mi · 6 min · Cross Bronx Expressway
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40
Keep slight right to continue on Cross Bronx Expressway
2 mi · 3 min · Cross Bronx Expressway
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41
Merge slight left onto Throgs Neck Expressway
3271 ft · 58 sec · Throgs Neck Expressway
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42
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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43
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
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44
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
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45
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
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46
Merge slight left onto Long Island Expressway
14.2 mi · 20 min · Long Island Expressway
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47
Take the exit slight right toward N East: Hauppauge
2144 ft · 53 sec
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48
Merge slight left onto Northern State Parkway
13.7 mi · 19 min · Northern State Parkway
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49
Take the exit slight right toward SM North: Kings Park
1052 ft · 26 sec
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50
Merge slight left onto Sagtikos State Parkway
152 m · 6 sec · Sagtikos State Parkway
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51
Continue on Sunken Meadow State Parkway
1.7 mi · 2 min · Sunken Meadow State Parkway
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52
Take the exit slight right toward NY 25 East: Jericho Turnpike East, Smithtown
1170 ft · 31 sec
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53
Turn slight right onto Jericho Turnpike
3.9 mi · 6 min · Jericho Turnpike
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54
Continue on West Main Street
3144 ft · 55 sec · West Main Street
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55
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Union and Smithtown.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
NY 17 East
Merge slight left
105 mi · 02h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Union and Sunny near Smithtown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union to Smithtown?
The road trip is about 293.9 miles (473 km) and usually takes 05h 02m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
South Fallsburg is a useful midpoint, sitting about 136.8 miles from Union and 157.1 miles from Smithtown.
How much longer is the road route than the straight-line distance?
The direct path is about 196 miles (315.5 km), while the road route adds roughly 97.9 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 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 6:54 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.13 one way or $92.25 round trip. Estimated CO2 is about 92.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Union and Sunny near Smithtown.
Stop Ideas Near South Fallsburg
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 South Fallsburg.
Poughkeepsie station
Rhinecliff–Kingston station
Croton–Harmon station
Hudson
Flight Path Map
This map shows the direct air route between Union and Smithtown. Straight-line distance: 196.02 mi (315.47 km).
#1 Union
Town in Broome County, New York, United States
| Population | 52,262 |
| Coordinates | 42.8678400, -75.8871400 |
| Altitude | 383 |
| 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: 473 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 47m |
| 40 mph (64.37 km/h) | 07h 20m |
| 50 mph (80.47 km/h) | 05h 52m |
| 60 mph (96.56 km/h) | 04h 53m |
| 70 mph (112.65 km/h) | 04h 11m |
| 80 mph (129 km/h) | 03h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $46.13 | $92.25 |
| Mid-grade | $4.98 | $51.66 | $103.33 |
| Premium | $5.38 | $55.81 | $111.62 |
| Diesel | $6.51 | $67.50 | $135.00 |
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