How far is Denville, NJ from Union, NJ?
The driving distance from Denville, NJ to Union, NJ is about 24.1 miles (38.8 km), with a travel time of about 00h 27m by car.
- The straight-line flight distance is about 17.5 miles (28.2 km).
- For a round trip, plan for roughly 00h 54m 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 27m.
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, United States
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 Denville and Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Denville and Union.
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1
Start on Broadway Avenue
27 m · 4 sec · Broadway Avenue
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2
Turn right onto Center Street
79 m · 13 sec · Center Street
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3
Turn right onto Bloomfield Avenue
72 m · 9 sec · Bloomfield Avenue
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4
Turn left onto East Main Street
656 ft · 24 sec · East Main Street
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5
Turn left onto I 80 East
1205 ft · 30 sec
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6
Merge slight left onto Christopher Columbus Highway
3.6 mi · 4 min · Christopher Columbus Highway
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7
Take the exit slight right toward I 287: Morristown, Mahwah
732 ft · 18 sec
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8
Keep slight right to continue on I 287 South: Morristown, Somerville
1168 ft · 29 sec
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9
Merge slight left
3.4 mi · 5 min
-
10
Take the exit slight right toward NJ 24 East: Springfield
1.1 km · 1 min
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11
Continue straight
9.3 mi · 11 min
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12
Keep slight left to continue on I 78 East: Holland Tunnel, New York City, Newark
1877 ft · 29 sec
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13
Keep slight right to continue on I 78 East Local: Newark
1220 ft · 17 sec
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14
Merge slight right onto Phillipsburg-Newark Expressway
1.5 km · 1 min · Phillipsburg-Newark Expressway
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15
Take the exit slight right toward NJ 124 East: Maplewood
1775 ft · 43 sec
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16
Turn straight onto Springfield Avenue
1.3 km · 2 min · Springfield Avenue
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17
Turn right onto Vauxhall Road
2 mi · 5 min · Vauxhall Road
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18
Turn left onto Harding Avenue
74 m · 11 sec · Harding Avenue
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19
Arrive at your destination
0 m · 1 sec · Harding Avenue
Car Route Details
A richer read on the saved driving route between Denville and Union.
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 East
Continue straight
9.29 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.
Mostly Sunny leaving Denville and Mostly Sunny near Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Denville to Union?
The road trip is about 24.1 miles (38.8 km) and usually takes 00h 27m 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?
Madison is a useful midpoint, sitting about 11.2 miles from Denville and 12.9 miles from Union.
How much longer is the road route than the straight-line distance?
The direct path is about 17.5 miles (28.2 km), while the road route adds roughly 6.6 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 7:36 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.47 one way or $6.95 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Denville and Mostly Sunny near Union.
Stop Ideas Near Madison
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 Madison.
Newark Liberty International Airport
Pennsylvania Station
Metropark station
New Brunswick station
Flight Path Map
This map shows the direct air route between Denville and Union. Straight-line distance: 17.51 mi (28.18 km).
#1 Denville
Township in Morris County, New Jersey
| Population | 16,362 |
| Coordinates | 40.8923200, -74.4773800 |
| Altitude | 154 |
| 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: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 28m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $3.47 | $6.95 |
| Mid-grade | $4.60 | $3.91 | $7.82 |
| Premium | $4.95 | $4.21 | $8.42 |
| Diesel | $5.98 | $5.08 | $10.17 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.