How far is Mount Vernon, NY from Stony Brook, NY?
The driving distance from Mount Vernon, NY to Stony Brook, NY is about 54.5 miles (87.7 km), with a travel time of about 01h 22m by car.
- The straight-line flight distance is about 36.4 miles (58.5 km).
- For a round trip, plan for roughly 02h 45m 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 01h 22m.
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.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Mount Vernon and Stony Brook.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Vernon and Stony Brook.
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1
Start on East Prospect Avenue
96 m · 18 sec · East Prospect Avenue
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2
Turn left onto North 5th Avenue
1.5 mi · 4 min · North 5th Avenue
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3
Continue on Dyre Avenue
2676 ft · 1 min · Dyre Avenue
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4
Continue on Steenwick Avenue
1010 ft · 31 sec · Steenwick Avenue
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5
At the end of the road, turn right onto New England Thruway
1634 ft · 33 sec · New England Thruway
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6
Take the ramp straight toward I 95 South
576 ft · 14 sec
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7
Merge slight left onto New England Thruway
1.5 mi · 2 min · New England Thruway
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8
Continue on Bruckner Expressway
1.3 mi · 2 min · Bruckner Expressway
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9
Keep slight left to continue on Throgs Neck Expressway
2.2 mi · 3 min · Throgs Neck Expressway
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10
Continue on Throgs Neck Bridge
2 mi · 3 min · Throgs Neck Bridge
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11
Continue on Clearview Expressway
3.2 mi · 3 min · Clearview Expressway
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12
Take the exit slight right toward I 495: Manhattan, Eastern Long Island
810 ft · 28 sec
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13
Keep slight left to continue on I 495 East: Long Island Expressway, Eastern Long Island
1448 ft · 39 sec
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14
Merge slight left onto Long Island Expressway
30.3 mi · 41 min · Long Island Expressway
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15
Take the exit slight right toward NY 111: Smithtown, Islip
669 ft · 14 sec
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16
Turn straight onto Express Drive South
1153 ft · 23 sec · Express Drive South
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17
Continue on Express Drive South
2136 ft · 45 sec · Express Drive South
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18
Turn left onto Wheeler Road
1.6 mi · 3 min · Wheeler Road
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19
Continue on Townline Road
530 ft · 17 sec · Townline Road
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20
Turn left onto Hauppauge Boulevard
1.5 km · 1 min · Hauppauge Boulevard
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21
Continue on Hauppauge Road
1.3 mi · 2 min · Hauppauge Road
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22
Continue on River Road
56 m · 3 sec · River Road
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23
Continue on North Country Road
3.4 mi · 6 min · North Country Road
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24
Continue on Smithtown-Port Jefferson Road
1.5 km · 2 min · Smithtown-Port Jefferson Road
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25
Continue on North Country Road
1.1 km · 1 min · North Country Road
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26
Turn straight onto Main Street
1.1 km · 1 min · Main Street
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27
Keep slight left to continue on Christian Avenue
2555 ft · 51 sec · Christian Avenue
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28
Turn right onto Cedar Street
20 m · 1 sec · Cedar Street
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29
Arrive at your destination
0 m · 1 sec · Cedar Street
Car Route Details
A richer read on the saved driving route between Mount Vernon and Stony Brook.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Long Island Expressway
Merge slight left onto Long Island Expressway
30.3 mi · 00h 41m
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.
Sunny leaving Mount Vernon and Sunny near Stony Brook.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mount Vernon to Stony Brook?
The road trip is about 54.5 miles (87.7 km) and usually takes 01h 22m 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?
Hicksville is a useful midpoint, sitting about 27.2 miles from Mount Vernon and 27.3 miles from Stony Brook.
How much longer is the road route than the straight-line distance?
The direct path is about 36.4 miles (58.5 km), while the road route adds roughly 18.1 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 3:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.54 one way or $17.08 round trip. Estimated CO2 is about 17.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Mount Vernon and Sunny near Stony Brook.
Stop Ideas Near Hicksville
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 Hicksville.
New Rochelle station
Stamford Transportation Center
Yonkers station
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Mount Vernon and Stony Brook. Straight-line distance: 36.36 mi (58.51 km).
#1 Mount Vernon
The most populous city in Westchester County, New York.
| Population | 68,628 |
| Coordinates | 40.9126000, -73.8370800 |
| Altitude | 33 |
| Country | United States |
#2 Stony Brook
Public university in Stony Brook, New York, United States
| Population | 13,740 |
| Coordinates | 40.9256500, -73.1409400 |
| Altitude | 27 |
| Country | United States |
End: Stony Brook (-73.14094, 40.92565)
Estimated Travel Time
Distance: 88 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 48m |
| 40 mph (64.37 km/h) | 01h 21m |
| 50 mph (80.47 km/h) | 01h 05m |
| 60 mph (96.56 km/h) | 00h 54m |
| 70 mph (112.65 km/h) | 00h 46m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $8.54 | $17.08 |
| Mid-grade | $4.98 | $9.57 | $19.13 |
| Premium | $5.38 | $10.33 | $20.67 |
| Diesel | $6.51 | $12.50 | $24.99 |
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