How far is Locust Valley, NY from Islip, NY?
The driving distance from Locust Valley, NY to Islip, NY is about 31.3 miles (50.3 km), with a travel time of about 00h 49m by car.
- The straight-line flight distance is about 22.6 miles (36.4 km).
- For a round trip, plan for roughly 01h 38m 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 00h 49m.
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.
Census-designated place in Nassau County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Locust Valley and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Locust Valley and Islip.
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1
Start on Birch Hill Road
12 m · 8 sec · Birch Hill Road
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2
Turn left onto Buckram Road
1.2 km · 1 min · Buckram Road
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3
Continue on Oyster Bay Road
1.3 mi · 2 min · Oyster Bay Road
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4
Turn straight onto Chicken Valley Road
1.3 mi · 2 min · Chicken Valley Road
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5
Turn left onto Wolver Hollow Road
1.5 mi · 3 min · Wolver Hollow Road
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6
Continue on Brookville Road
692 ft · 14 sec · Brookville Road
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7
Turn right onto Wheatley Road
1.4 km · 1 min · Wheatley Road
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8
Continue on Wheatley Road
38 m · 5 sec · Wheatley Road
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9
Turn left onto Cedar Swamp Road
2.6 mi · 4 min · Cedar Swamp Road
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10
Continue on North Broadway
1.5 mi · 3 min · North Broadway
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11
Keep slight left to continue on North Broadway
1357 ft · 27 sec · North Broadway
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12
Continue on South Broadway
2.5 mi · 4 min · South Broadway
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13
Continue on Hicksville Road
2.9 mi · 4 min · Hicksville Road
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14
Take the ramp slight right toward SO East: East Islip
954 ft · 24 sec
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15
Merge slight left onto Southern State Parkway
10.8 mi · 13 min · Southern State Parkway
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16
Keep slight left to continue on Southern State Parkway
1072 ft · 16 sec · Southern State Parkway
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17
Take the exit slight right toward Bay Shore Road South, Bay Shore
1044 ft · 30 sec
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18
Turn straight onto Bay Shore Road
2667 ft · 1 min · Bay Shore Road
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19
Continue on Howells Road
1845 ft · 46 sec · Howells Road
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20
Turn straight onto Sunrise Highway
104 m · 7 sec · Sunrise Highway
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21
Keep slight right to continue on Howells Road
3115 ft · 2 min · Howells Road
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22
Continue on Roosevelt Street
1248 ft · 25 sec · Roosevelt Street
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23
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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24
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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25
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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26
Continue on Main Street
1.2 km · 1 min · Main Street
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27
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Locust Valley and Islip.
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
10.8 mi · 00h 13m
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.
Rain Showers Likely leaving Locust Valley and Rain Showers Likely near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Locust Valley to Islip?
The road trip is about 31.3 miles (50.3 km) and usually takes 00h 49m 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?
Plainedge is a useful midpoint, sitting about 15.6 miles from Locust Valley and 15.6 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 22.6 miles (36.4 km), while the road route adds roughly 8.7 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.41 one way or $8.82 round trip. Estimated CO2 is about 9.8 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Locust Valley and Rain Showers Likely near Islip.
Stop Ideas Near Plainedge
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 Plainedge.
New Rochelle station
Stamford Transportation Center
Yonkers station
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Locust Valley and Islip. Straight-line distance: 22.61 mi (36.38 km).
#1 Locust Valley
Census designated place in New York, USA
| Population | 3,406 |
| Coordinates | 40.8759300, -73.5970700 |
| Altitude | 39 |
| 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: Islip (-73.21039, 40.72982)
Estimated Travel Time
Distance: 50 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 02m |
| 40 mph (64.37 km/h) | 00h 46m |
| 50 mph (80.47 km/h) | 00h 37m |
| 60 mph (96.56 km/h) | 00h 31m |
| 70 mph (112.65 km/h) | 00h 26m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $4.41 | $8.82 |
| Mid-grade | $4.48 | $4.93 | $9.86 |
| Premium | $4.86 | $5.35 | $10.69 |
| Diesel | $4.69 | $5.16 | $10.33 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.