How far is Iselin, NJ from Denville, NJ?
The driving distance from Iselin, NJ to Denville, NJ is about 34 miles (54.7 km), with a travel time of about 00h 47m by car.
- The straight-line flight distance is about 23.4 miles (37.6 km).
- For a round trip, plan for roughly 01h 35m 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 00h 47m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Union 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 Iselin and Denville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Iselin and Denville.
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1
Start on Wright Street
135 m · 23 sec · Wright Street
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2
Turn right onto Auth Avenue
707 ft · 26 sec · Auth Avenue
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3
Turn slight right onto Lincoln Highway
1542 ft · 29 sec · Lincoln Highway
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4
Take the ramp slight right toward GSP Toll North
589 ft · 15 sec
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5
Continue straight
1306 ft · 47 sec
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6
Merge slight left onto Garden State Parkway
10.5 mi · 14 min · Garden State Parkway
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7
Take the exit slight right toward I 78 West: Springfield
1.3 km · 2 min
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8
Merge slight left onto Phillipsburg-Newark Expressway
3.6 mi · 4 min · Phillipsburg-Newark Expressway
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9
Keep slight right to continue on NJ 24 West: Springfield, Morristown
1798 ft · 34 sec
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10
Continue straight
9.4 mi · 11 min
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11
Keep slight right to continue on I 287 North: Mahwah
2647 ft · 57 sec
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12
Merge slight left
3.5 mi · 5 min
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13
Take the exit slight right toward I 80 East: Smith Road, New York City
860 ft · 21 sec
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14
Keep slight right to continue on Smith Road
673 ft · 25 sec
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15
Turn left onto Smith Road
1918 ft · 42 sec · Smith Road
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16
Merge slight right
3.3 mi · 5 min
-
17
Turn straight onto Bloomfield Avenue
1366 ft · 42 sec · Bloomfield Avenue
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18
Keep slight right to continue on Broadway Avenue
1144 ft · 39 sec · Broadway Avenue
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19
Arrive at your destination
0 m · 1 sec · Broadway Avenue
Car Route Details
A richer read on the saved driving route between Iselin and Denville.
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.
Garden State Parkway
Merge slight left onto Garden State Parkway
10.5 mi · 00h 14m
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 Iselin and Mostly Sunny near Denville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Iselin to Denville?
The road trip is about 34 miles (54.7 km) and usually takes 00h 47m 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?
Summit is a useful midpoint, sitting about 17 miles from Iselin and 17 miles from Denville.
How much longer is the road route than the straight-line distance?
The direct path is about 23.4 miles (37.6 km), while the road route adds roughly 10.6 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:54 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.90 one way or $9.81 round trip. Estimated CO2 is about 10.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Iselin and Mostly Sunny near Denville.
Stop Ideas Near Summit
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 Summit.
Newark Liberty International Airport
Pennsylvania Station
Metropark station
New Brunswick station
Flight Path Map
This map shows the direct air route between Iselin and Denville. Straight-line distance: 23.35 mi (37.58 km).
#1 Iselin
Unincorporated community in New Jersey, United States
| Population | 18,695 |
| Coordinates | 40.5753800, -74.3223700 |
| Altitude | 19 |
| Country | United States |
#2 Denville
Township in Morris County, New Jersey
| Population | 16,362 |
| Coordinates | 40.8923200, -74.4773800 |
| Altitude | 154 |
| Country | United States |
End: Denville (-74.47738, 40.89232)
Estimated Travel Time
Distance: 55 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 07m |
| 40 mph (64.37 km/h) | 00h 50m |
| 50 mph (80.47 km/h) | 00h 40m |
| 60 mph (96.56 km/h) | 00h 33m |
| 70 mph (112.65 km/h) | 00h 29m |
| 80 mph (129 km/h) | 00h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.90 | $9.81 |
| Mid-grade | $4.60 | $5.52 | $11.04 |
| Premium | $4.95 | $5.94 | $11.89 |
| Diesel | $5.98 | $7.18 | $14.35 |
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 · Aug 11, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.