How far is Smithtown, NY from Monroe, NY?
The driving distance from Smithtown, NY to Monroe, NY is about 92.3 miles (148.6 km), with a travel time of about 02h 07m by car.
- The straight-line flight distance is about 61 miles (98.1 km).
- For a round trip, plan for roughly 04h 14m 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 07m.
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.
City in New York County, New York, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Smithtown and Monroe.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithtown and Monroe.
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1
Start on West Main Street
2964 ft · 52 sec · West Main Street
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2
Keep slight left to continue on West Main Street
55 m · 5 sec · West Main Street
-
3
Continue on Jericho Turnpike
4 mi · 6 min · Jericho Turnpike
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4
Take the ramp slight right toward SM South: Bay Shore
1110 ft · 27 sec
-
5
Merge slight left onto Sunken Meadow State Parkway
1.9 mi · 2 min · Sunken Meadow State Parkway
-
6
Continue on Sagtikos State Parkway
1.2 km · 50 sec · Sagtikos State Parkway
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7
Take the exit slight right toward I 495 West: New York
688 ft · 17 sec
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8
Keep slight left to continue on I 495 West: New York
955 ft · 23 sec
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9
Turn straight onto LIE North Service Road
1987 ft · 34 sec · LIE North Service Road
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10
Turn straight onto North Service Road
770 ft · 14 sec · North Service Road
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11
Take the ramp slight left toward I 495 West: New York
879 ft · 22 sec
-
12
Merge slight left onto Long Island Expressway
24.8 mi · 34 min · Long Island Expressway
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13
Take the exit slight right toward Cross Island Parkway, Whitestone Bridge, Kennedy Airport
1267 ft · 27 sec
-
14
Keep slight right to continue on Cross Island Parkway North, Whitestone Bridge
1604 ft · 38 sec
-
15
Merge slight left onto Cross Island Parkway
3.1 mi · 5 min · Cross Island Parkway
-
16
Take the exit slight right toward I 295 North: Throgs Neck Bridge, Bronx, New England
2905 ft · 1 min
-
17
Merge slight left onto Throgs Neck Bridge
1.8 mi · 3 min · Throgs Neck Bridge
-
18
Continue on Throgs Neck Expressway
1.1 km · 1 min · Throgs Neck Expressway
-
19
Keep slight left to continue on Cross Bronx Expressway
6.6 mi · 9 min · Cross Bronx Expressway
-
20
Keep slight left to continue on Trans-Manhattan Expressway
1.1 km · 1 min · Trans-Manhattan Expressway
-
21
Continue on George Washington Bridge (upper level)
3167 ft · 60 sec · George Washington Bridge (upper level)
-
22
Continue straight
2659 ft · 48 sec
-
23
Keep slight left
3214 ft · 39 sec
-
24
Keep slight left
559 ft · 9 sec
-
25
Take the exit slight right toward I 95 South, NJTP South: Hackensack
1270 ft · 23 sec
-
26
Keep slight right to continue on NJ 4 West: Paramus
970 ft · 24 sec
-
27
Merge slight right
6.7 mi · 9 min
-
28
Take the exit straight toward GSP South, NJ 17 South, GSP North, NJ 17 North: Grand State Plaza, Newark, Mahwah
951 ft · 26 sec
-
29
Keep slight right to continue on NJ 17 North: Mahwah
1302 ft · 37 sec
-
30
Merge slight left
3.3 mi · 4 min
-
31
Continue straight
7.3 mi · 10 min
-
32
Continue straight
1.2 km · 50 sec
-
33
Continue straight
3.3 mi · 4 min
-
34
Continue straight
877 ft · 11 sec
-
35
Keep slight left to continue on I 87 North, NY 17 North, New York State Thruway North: Albany
14.3 mi · 16 min
-
36
Take the exit slight right toward US 6, NY 17: Harriman
1.5 mi · 3 min
-
37
Continue straight
46 m · 4 sec
-
38
Keep slight left to continue on NY 17 West: Binghamton
2294 ft · 30 sec
-
39
Continue straight
3 mi · 4 min
-
40
Take the exit slight right toward NY 208: Monroe, Washingtonville
2015 ft · 57 sec
-
41
Keep slight left to continue on NY 208 South: Monroe
83 m · 15 sec
-
42
Turn left
1.1 mi · 3 min
-
43
Turn left onto Charlton Place
38 m · 7 sec · Charlton Place
-
44
Turn right
10 m · 2 sec
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45
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Smithtown and Monroe.
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
24.8 mi · 00h 34m
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 Smithtown and Sunny near Monroe.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smithtown to Monroe?
The road trip is about 92.3 miles (148.6 km) and usually takes 02h 07m 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?
Inwood is a useful midpoint, sitting about 46.1 miles from Smithtown and 46.2 miles from Monroe.
How much longer is the road route than the straight-line distance?
The direct path is about 61 miles (98.1 km), while the road route adds roughly 31.3 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 2:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.50 one way or $29.00 round trip. Estimated CO2 is about 29 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Smithtown and Sunny near Monroe.
Stop Ideas Near Inwood
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Parking Lot
The Yard: City Hall Park NYC
CITY HALL LOBBY
Diamond City Hall Photography
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Inwood.
Yonkers station
New Rochelle station
Pennsylvania Station
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Smithtown and Monroe. Straight-line distance: 60.93 mi (98.06 km).
#1 Smithtown
Census-designated place in Suffolk County, New York
| Population | 110,876 |
| Coordinates | 40.8559300, -73.2006700 |
| Altitude | 18 |
| Country | United States |
#2 Monroe
Town in New York, United States
| Population | 9,351 |
| Coordinates | 41.3306500, -74.1868100 |
| Altitude | 196 |
| Country | United States |
End: Monroe (-74.18681, 41.33065)
Estimated Travel Time
Distance: 149 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 04m |
| 40 mph (64.37 km/h) | 02h 18m |
| 50 mph (80.47 km/h) | 01h 50m |
| 60 mph (96.56 km/h) | 01h 32m |
| 70 mph (112.65 km/h) | 01h 19m |
| 80 mph (129 km/h) | 01h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.45 | $14.50 | $29.00 |
| Mid-grade | $4.98 | $16.24 | $32.48 |
| Premium | $5.38 | $17.55 | $35.09 |
| Diesel | $6.51 | $21.22 | $42.44 |
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