How far is Union City, NJ from Plainsboro, NJ?
The driving distance from Union City, NJ to Plainsboro, NJ is about 49.5 miles (79.6 km), with a travel time of about 01h 08m by car.
- The straight-line flight distance is about 43.2 miles (69.5 km).
- For a round trip, plan for roughly 02h 17m 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 08m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Union City and Plainsboro.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union City and Plainsboro.
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1
Start on 45th Street
606 ft · 33 sec · 45th Street
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2
Turn left onto John F. Kennedy Boulevard
2897 ft · 1 min · John F. Kennedy Boulevard
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3
Turn slight left
776 ft · 26 sec
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4
Take the ramp slight right toward NJ 495 West, NJTP West
876 ft · 22 sec
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5
Continue on NJ 495 West
114 m · 11 sec
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6
Merge slight left
1.1 km · 1 min
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7
Keep slight left to continue on I 95 South: Newark
1 km · 1 min
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8
Merge slight left onto New Jersey Turnpike
5.6 mi · 8 min · New Jersey Turnpike
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9
Keep slight left to continue on New Jersey Turnpike
32.3 mi · 39 min · New Jersey Turnpike
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10
Take the exit slight right toward NJ 32: Jamesburg, Cranbury
1.3 km · 2 min
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11
Keep slight right to continue on CR 535: Cranbury, South Brunswick
2176 ft · 1 min
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12
Turn left onto Cranbury-South River Road
1115 ft · 22 sec · Cranbury-South River Road
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13
Turn right onto Forsgate Drive
1.4 km · 2 min · Forsgate Drive
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14
Turn left
1.6 mi · 3 min
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15
Turn right onto Dey Road
4.6 mi · 8 min · Dey Road
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16
Continue on Plainsboro Road
2586 ft · 2 min · Plainsboro Road
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17
Turn left onto Prospect Avenue
12 m · 2 sec · Prospect Avenue
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18
Arrive at your destination
0 m · 1 sec · Prospect Avenue
Car Route Details
A richer read on the saved driving route between Union City and Plainsboro.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
New Jersey Turnpike
Keep slight left to continue on New Jersey Turnpike
32.3 mi · 00h 39m
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.
Mostly Sunny leaving Union City and Mostly Sunny near Plainsboro.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union City to Plainsboro?
The road trip is about 49.5 miles (79.6 km) and usually takes 01h 08m 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?
Fords is a useful midpoint, sitting about 24.7 miles from Union City and 24.7 miles from Plainsboro.
How much longer is the road route than the straight-line distance?
The direct path is about 43.2 miles (69.5 km), while the road route adds roughly 6.3 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 4:12 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.15 one way or $14.30 round trip. Estimated CO2 is about 15.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Union City and Mostly Sunny near Plainsboro.
Stop Ideas Near Fords
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 Fords.
Metropark station
New Brunswick station
Newark Liberty International Airport
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Union City and Plainsboro. Straight-line distance: 43.2 mi (69.53 km).
#1 Union City
The most populous city in Hudson County, New Jersey.
| Population | 67,982 |
| Coordinates | 40.7795500, -74.0237500 |
| Altitude | 53 |
| Country | United States |
#2 Plainsboro
Township in Middlesex County, New Jersey
| Population | 22,709 |
| Coordinates | 40.3334400, -74.6004300 |
| Altitude | 21 |
| Country | United States |
End: Plainsboro (-74.60043, 40.33344)
Estimated Travel Time
Distance: 80 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 38m |
| 40 mph (64.37 km/h) | 01h 14m |
| 50 mph (80.47 km/h) | 00h 59m |
| 60 mph (96.56 km/h) | 00h 49m |
| 70 mph (112.65 km/h) | 00h 42m |
| 80 mph (129 km/h) | 00h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $7.15 | $14.30 |
| Mid-grade | $4.60 | $8.05 | $16.10 |
| Premium | $4.95 | $8.67 | $17.34 |
| Diesel | $5.98 | $10.47 | $20.93 |
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 Jersey · May 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.