How far is Smithfield, NY from Islip, NY?
The driving distance from Smithfield, NY to Islip, NY is about 127 miles (204.4 km), with a travel time of about 02h 33m by car.
- The straight-line flight distance is about 82.4 miles (132.6 km).
- For a round trip, plan for roughly 05h 07m 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 02h 33m.
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.
Hamlet in the town of Harrison, in Westchester County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Rain Showers
Partly Sunny
Driving Route Map
The map below follows the saved road route between Smithfield and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithfield and Islip.
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1
Start on Smithfield Valley Road
22 m · 3 sec · Smithfield Valley Road
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2
Continue on Sn Fri Road
1.2 km · 2 min · Sn Fri Road
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3
Continue on Smithfield Valley Road
2.6 mi · 6 min · Smithfield Valley Road
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4
Merge slight right
1.2 mi · 1 min
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5
Turn right onto West Lake Amenia Road
2405 ft · 2 min · West Lake Amenia Road
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6
Turn sharp right onto State Highway 22
33.6 mi · 51 min · State Highway 22
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7
Continue straight
27.4 mi · 32 min
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8
Keep slight left to continue on Hutchinson River Parkway, New York City
1.5 mi · 2 min
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9
Merge slight right onto Hutchinson River Parkway
7.7 mi · 11 min · Hutchinson River Parkway
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10
Keep slight right to continue on Hutchinson River Parkway
5.9 mi · 9 min · Hutchinson River Parkway
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11
Take the exit slight right toward I 95 South: George Washington Bridge, Stillwell Avenue
43 m · 5 sec
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12
Keep slight right to continue on I 95 South: George Washington Bridge
1265 ft · 47 sec
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13
Merge slight left onto New England Thruway
1861 ft · 32 sec · New England Thruway
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14
Continue on Bruckner Expressway
1.3 mi · 2 min · Bruckner Expressway
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15
Keep slight left to continue on Throgs Neck Expressway
2.2 mi · 3 min · Throgs Neck Expressway
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16
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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17
Continue on Clearview Expressway
5 mi · 5 min · Clearview Expressway
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18
Continue on Hollis Court Boulevard
1.2 km · 1 min · Hollis Court Boulevard
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19
At the end of the road, turn left onto Jamaica Avenue
1117 ft · 35 sec · Jamaica Avenue
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20
Turn right onto Hempstead Avenue
1.4 km · 2 min · Hempstead Avenue
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21
Turn right onto 225th Street
69 m · 10 sec · 225th Street
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22
Take the ramp straight toward Cross Island Parkway South, Verrazano Bridge
1171 ft · 29 sec
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23
Merge slight left onto Cross Island Parkway
1.3 mi · 2 min · Cross Island Parkway
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24
Take the exit slight left toward Southern State Parkway East, Eastern Long Island
2383 ft · 1 min
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25
Merge slight left onto Southern State Parkway
24.5 mi · 31 min · Southern State Parkway
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26
Keep slight left to continue on Southern State Parkway
1072 ft · 16 sec · Southern State Parkway
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27
Take the exit slight right toward Bay Shore Road South, Bay Shore
1044 ft · 32 sec
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28
Turn straight onto Bay Shore Road
2667 ft · 1 min · Bay Shore Road
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29
Continue on Howells Road
1845 ft · 44 sec · Howells Road
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30
Turn straight onto Sunrise Highway
104 m · 7 sec · Sunrise Highway
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31
Keep slight right to continue on Howells Road
3115 ft · 2 min · Howells Road
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32
Continue on Roosevelt Street
1248 ft · 25 sec · Roosevelt Street
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33
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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34
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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35
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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36
Continue on Main Street
1.2 km · 1 min · Main Street
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37
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Smithfield and Islip.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
State Highway 22
Turn sharp right onto State Highway 22
33.6 mi · 00h 51m
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.
Partly Sunny then Chance Rain Showers leaving Smithfield and Partly Sunny near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smithfield to Islip?
The road trip is about 127 miles (204.4 km) and usually takes 02h 33m 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?
Purchase is a useful midpoint, sitting about 62.7 miles from Smithfield and 64.3 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 82.4 miles (132.6 km), while the road route adds roughly 44.6 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 1:22 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.96 one way or $35.92 round trip. Estimated CO2 is about 39.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Chance Rain Showers around Smithfield and Partly Sunny near Islip.
Stop Ideas Near Purchase
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old Town Hall
Mount Vernon City Hall
City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Purchase.
Stamford Transportation Center
New Rochelle station
Yonkers station
Croton–Harmon station
Flight Path Map
This map shows the direct air route between Smithfield and Islip. Straight-line distance: 82.38 mi (132.58 km).
#1 Smithfield
Town in New York, United States
| Population | 1,249 |
| Coordinates | 41.8856500, -73.6001300 |
| Altitude | 241 |
| Country | United States |
#2 Islip
This Long Island community is situated on the south shore of Suffolk County, New York, at an elevation of 13 feet.
| Population | 322,328 |
| Coordinates | 40.7298200, -73.2103900 |
| Altitude | 4 |
| Country | United States |
End: Main Street (-73.210382, 40.729789)
Estimated Travel Time
Distance: 204 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 13m |
| 40 mph (64.37 km/h) | 03h 10m |
| 50 mph (80.47 km/h) | 02h 32m |
| 60 mph (96.56 km/h) | 02h 07m |
| 70 mph (112.65 km/h) | 01h 48m |
| 80 mph (129 km/h) | 01h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $17.96 | $35.92 |
| Mid-grade | $4.48 | $20.07 | $40.15 |
| Premium | $4.86 | $21.78 | $43.55 |
| Diesel | $4.69 | $21.03 | $42.06 |
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 · Apr 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.