How far is Mount Vernon, NY from Lake Ronkonkoma, NY?
The driving distance from Mount Vernon, NY to Lake Ronkonkoma, NY is about 51.4 miles (82.7 km), with a travel time of about 01h 16m by car.
- The straight-line flight distance is about 37.3 miles (60 km).
- For a round trip, plan for roughly 02h 32m 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 16m.
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
Mostly Cloudy then Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Mount Vernon and Lake Ronkonkoma.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Vernon and Lake Ronkonkoma.
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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
35.6 mi · 48 min · Long Island Expressway
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15
Take the exit slight right toward CR 93: Ocean Avenue, Ronkonkoma, Oakdale
1164 ft · 25 sec
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16
Turn straight onto Express Drive South
103 m · 9 sec · Express Drive South
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17
Turn left onto Ocean Avenue
1.2 km · 2 min · Ocean Avenue
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18
Continue on Rosevale Avenue
1.5 km · 2 min · Rosevale Avenue
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19
Continue on Gibbs Pond Road
1472 ft · 44 sec · Gibbs Pond Road
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20
Turn right onto Margaret Drive
1277 ft · 56 sec · Margaret Drive
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21
Arrive at your destination
0 m · 1 sec · Margaret Drive
Car Route Details
A richer read on the saved driving route between Mount Vernon and Lake Ronkonkoma.
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
35.6 mi · 00h 48m
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 Mostly Cloudy then Rain Showers Likely near Lake Ronkonkoma.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mount Vernon to Lake Ronkonkoma?
The road trip is about 51.4 miles (82.7 km) and usually takes 01h 16m 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?
New Cassel is a useful midpoint, sitting about 25.7 miles from Mount Vernon and 25.8 miles from Lake Ronkonkoma.
How much longer is the road route than the straight-line distance?
The direct path is about 37.3 miles (60 km), while the road route adds roughly 14.1 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 3:58 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.05 one way or $16.10 round trip. Estimated CO2 is about 16.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Mount Vernon and Mostly Cloudy then Rain Showers Likely near Lake Ronkonkoma.
Stop Ideas Near New Cassel
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Flushing Town Hall
Babylon Town Hall Annex
Town of Babylon History Museum at Old Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to New Cassel.
New Rochelle station
Stamford Transportation Center
Yonkers station
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Mount Vernon and Lake Ronkonkoma. Straight-line distance: 37.26 mi (59.97 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 Lake Ronkonkoma
Census-designated place in Suffolk County, New York
| Population | 20,155 |
| Coordinates | 40.8351000, -73.1312200 |
| Altitude | 22 |
| Country | United States |
End: Lake Ronkonkoma (-73.13122, 40.8351)
Estimated Travel Time
Distance: 83 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 42m |
| 40 mph (64.37 km/h) | 01h 17m |
| 50 mph (80.47 km/h) | 01h 01m |
| 60 mph (96.56 km/h) | 00h 51m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $8.05 | $16.10 |
| Mid-grade | $4.98 | $9.02 | $18.03 |
| Premium | $5.38 | $9.74 | $19.48 |
| Diesel | $6.51 | $11.78 | $23.56 |
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