How far is Riverhead, NY from Greenlawn, NY?
The driving distance from Riverhead, NY to Greenlawn, NY is about 41 miles (66 km), with a travel time of about 01h 01m by car.
- The straight-line flight distance is about 36.8 miles (59.3 km).
- For a round trip, plan for roughly 02h 02m 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 01m.
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
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 Riverhead and Greenlawn.
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverhead and Greenlawn.
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1
Start on East Main Street
43 m · 11 sec · East Main Street
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2
Turn left onto Peconic Avenue
635 ft · 17 sec · Peconic Avenue
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3
Turn right onto Nugent Drive
4.1 mi · 6 min · Nugent Drive
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4
Continue on Edwards Avenue
1354 ft · 34 sec · Edwards Avenue
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5
Turn left onto I 495 West: New York
89 m · 6 sec
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6
Continue on I 495 West: New York
1483 ft · 32 sec
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7
Merge slight left onto Long Island Expressway
24.2 mi · 33 min · Long Island Expressway
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8
Take the exit slight right toward NY 454: Patchogue, Commack
1275 ft · 27 sec
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9
Turn straight onto Express Drive North
1153 ft · 28 sec · Express Drive North
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10
Turn right onto Veterans Memorial Highway
3.7 mi · 5 min · Veterans Memorial Highway
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11
Keep slight right to continue on Veterans Highway
3237 ft · 52 sec · Veterans Highway
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12
Continue on Veterans Memorial Highway
1.7 mi · 3 min · Veterans Memorial Highway
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13
Turn left onto Jericho Turnpike
2.3 mi · 5 min · Jericho Turnpike
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14
Turn right onto Elwood Road
2985 ft · 1 min · Elwood Road
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15
Turn left onto Cuba Hill Road
2979 ft · 59 sec · Cuba Hill Road
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16
Continue on Cuba Hill Road
1.5 mi · 3 min · Cuba Hill Road
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17
Turn right onto Broadway
2703 ft · 1 min · Broadway
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18
Turn left onto Smith Street
6 m · 1 sec · Smith Street
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19
Arrive at your destination
0 m · 1 sec · Smith Street
Car Route Details
A richer read on the saved driving route between Riverhead and Greenlawn.
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
24.2 mi · 00h 33m
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 Riverhead and Sunny near Greenlawn.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Riverhead to Greenlawn?
The road trip is about 41 miles (66 km) and usually takes 01h 01m 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?
Farmingville is a useful midpoint, sitting about 20.4 miles from Riverhead and 20.6 miles from Greenlawn.
How much longer is the road route than the straight-line distance?
The direct path is about 36.8 miles (59.3 km), while the road route adds roughly 4.2 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 4:28 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.45 one way or $12.90 round trip. Estimated CO2 is about 12.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Riverhead and Sunny near Greenlawn.
Stop Ideas Near Farmingville
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 Farmingville.
Bridgeport
Stamford Transportation Center
Union Station
New Rochelle station
Flight Path Map
This map shows the direct air route between Riverhead and Greenlawn. Straight-line distance: 36.87 mi (59.34 km).
#1 Riverhead
Town in New York
| Population | 33,434 |
| Coordinates | 40.9170400, -72.6620400 |
| Altitude | 4 |
| Country | United States |
#2 Greenlawn
Census-designated place in Suffolk County, New York
| Population | 13,742 |
| Coordinates | 40.8689900, -73.3651200 |
| Altitude | 69 |
| Country | United States |
End: Greenlawn (-73.36512, 40.86899)
Estimated Travel Time
Distance: 66 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 21m |
| 40 mph (64.37 km/h) | 01h 01m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 40m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $6.45 | $12.90 |
| Mid-grade | $4.98 | $7.22 | $14.45 |
| Premium | $5.38 | $7.80 | $15.61 |
| Diesel | $6.51 | $9.44 | $18.88 |
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