How far is Marlboro, NJ from Union, NJ?
The driving distance from Marlboro, NJ to Union, NJ is about 73.3 miles (117.9 km), with a travel time of about 01h 15m by car.
- The straight-line flight distance is about 64.9 miles (104.5 km).
- For a round trip, plan for roughly 02h 31m 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 15m.
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.
Borough in Mercer County, New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Marlboro and Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marlboro and Union.
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1
Start on East Cedar Avenue
45 m · 9 sec · East Cedar Avenue
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2
Turn right onto North Maple Avenue
1.5 km · 2 min · North Maple Avenue
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3
Turn left onto Church Road
1.8 mi · 3 min · Church Road
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4
Continue straight
60 m · 3 sec
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5
Take the exit slight right toward NJTP
1422 ft · 38 sec
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6
Keep slight left to continue on NJTP North: New York
2795 ft · 1 min
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7
Merge slight left onto New Jersey Turnpike
14.6 mi · 17 min · New Jersey Turnpike
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8
Keep slight left to continue on New Jersey Turnpike
41.4 mi · 48 min · New Jersey Turnpike
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9
Take the exit slight right toward GSP, US 9: Garden State Parkway, Woodbridge
2531 ft · 1 min
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10
Keep slight right to continue on GSP North: Garden State Parkway
1.2 km · 2 min
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11
Merge slight left onto Garden State Parkway
11.2 mi · 16 min · Garden State Parkway
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12
Take the exit slight right toward US 22, NJ 82: Hillside
1526 ft · 39 sec
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13
Merge slight left
48 m · 3 sec
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14
Take the exit slight right toward NJ 82: Morris Avenue, Kean University, Elizabeth
878 ft · 24 sec
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15
Turn slight right onto Morris Avenue
690 ft · 15 sec · Morris Avenue
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16
Turn slight right
155 m · 44 sec
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17
Turn left onto Morris Avenue
2494 ft · 55 sec · Morris Avenue
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18
Turn right onto Harding Avenue
646 ft · 29 sec · Harding Avenue
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19
Turn right onto Vauxhall Road
10 m · 5 sec · Vauxhall Road
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20
Turn left onto Harding Avenue
74 m · 11 sec · Harding Avenue
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21
Arrive at your destination
0 m · 1 sec · Harding Avenue
Car Route Details
A richer read on the saved driving route between Marlboro and Union.
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
41.4 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.
Partly Sunny leaving Marlboro and Partly Sunny near Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marlboro to Union?
The road trip is about 73.3 miles (117.9 km) and usually takes 01h 15m 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?
Hightstown is a useful midpoint, sitting about 36.7 miles from Marlboro and 36.6 miles from Union.
How much longer is the road route than the straight-line distance?
The direct path is about 64.9 miles (104.5 km), while the road route adds roughly 8.4 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 $10.58 one way or $21.17 round trip. Estimated CO2 is about 23 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Marlboro and Partly Sunny near Union.
Stop Ideas Near Hightstown
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old City Hall
Trenton City Hall
Trenton Health & Human Services
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Hightstown.
Princeton Junction station
Trenton Transit Center
New Brunswick station
Metropark station
Flight Path Map
This map shows the direct air route between Marlboro and Union. Straight-line distance: 64.96 mi (104.54 km).
#1 Marlboro
Township of New Jersey
| Population | 39,624 |
| Coordinates | 39.9028900, -74.9218300 |
| Altitude | 25 |
| Country | United States |
#2 Union
A city in Union County, New Jersey.
| Population | 67,137 |
| Coordinates | 40.6976000, -74.2632000 |
| Altitude | 30 |
| Country | United States |
End: Harding Avenue (-74.26348, 40.697581)
Estimated Travel Time
Distance: 118 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 26m |
| 40 mph (64.37 km/h) | 01h 49m |
| 50 mph (80.47 km/h) | 01h 27m |
| 60 mph (96.56 km/h) | 01h 13m |
| 70 mph (112.65 km/h) | 01h 02m |
| 80 mph (129 km/h) | 00h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $10.58 | $21.17 |
| Mid-grade | $4.60 | $11.91 | $23.82 |
| Premium | $4.95 | $12.83 | $25.66 |
| Diesel | $5.98 | $15.49 | $30.98 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.