How far is Union, NJ from Monroe, NJ?
The driving distance from Union, NJ to Monroe, NJ is about 14.1 miles (22.7 km), with a travel time of about 00h 21m by car.
- The straight-line flight distance is about 12.3 miles (19.8 km).
- For a round trip, plan for roughly 00h 43m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 21m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 Morris County, New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Union and Monroe.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union and Monroe.
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1
Start on Harding Avenue
74 m · 12 sec · Harding Avenue
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2
Turn right onto Vauxhall Road
2 mi · 5 min · Vauxhall Road
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3
Turn left onto Springfield Avenue
3245 ft · 1 min · Springfield Avenue
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4
Take the ramp straight toward NJ 24 West: Morristown
1875 ft · 1 min
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5
Merge slight left onto Phillipsburg-Newark Expressway
1.5 km · 1 min · Phillipsburg-Newark Expressway
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6
Keep slight right to continue on NJ 24 West: Springfield, Morristown
1798 ft · 34 sec
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7
Continue straight
9.1 mi · 11 min
-
8
Take the exit slight right toward CR 511 North: Whippany
1248 ft · 30 sec
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9
Turn straight onto Whippany Road
1110 ft · 31 sec · Whippany Road
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10
Turn left onto Park Avenue
1768 ft · 49 sec · Park Avenue
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11
Arrive at your destination
0 m · 1 sec · Cedar Knolls Road
Car Route Details
A richer read on the saved driving route between Union and Monroe.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
NJ 24 West
Continue straight
9.09 mi · 00h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Showers And Thunderstorms Likely leaving Union and Rain Showers Likely near Monroe.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union to Monroe?
The road trip is about 14.1 miles (22.7 km) and usually takes 00h 21m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Chatham is a useful midpoint, sitting about 7.1 miles from Union and 7.1 miles from Monroe.
How much longer is the road route than the straight-line distance?
The direct path is about 12.3 miles (19.8 km), while the road route adds roughly 1.8 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:46 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.04 one way or $4.09 round trip. Estimated CO2 is about 4.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Union and Rain Showers Likely near Monroe.
Stop Ideas Near Chatham
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 Chatham.
Newark Liberty International Airport
Pennsylvania Station
Metropark station
New Brunswick station
Flight Path Map
This map shows the direct air route between Union and Monroe. Straight-line distance: 12.3 mi (19.8 km).
#1 Union
A city in Union County, New Jersey.
| Population | 67,137 |
| Coordinates | 40.6976000, -74.2632000 |
| Altitude | 30 |
| Country | United States |
#2 Monroe
Township in Gloucester County, New Jersey
| Population | 44,884 |
| Coordinates | 40.8128800, -74.4423800 |
| Altitude | 82 |
| Country | United States |
End: Monroe (-74.44238, 40.81288)
Estimated Travel Time
Distance: 23 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 28m |
| 40 mph (64.37 km/h) | 00h 21m |
| 50 mph (80.47 km/h) | 00h 16m |
| 60 mph (96.56 km/h) | 00h 14m |
| 70 mph (112.65 km/h) | 00h 12m |
| 80 mph (129 km/h) | 00h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $2.04 | $4.09 |
| Mid-grade | $4.60 | $2.30 | $4.60 |
| Premium | $4.95 | $2.48 | $4.95 |
| Diesel | $5.98 | $2.99 | $5.98 |
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.