How far is Mendham, NJ from Trenton, NJ?
The driving distance from Mendham, NJ to Trenton, NJ is about 46.9 miles (75.5 km), with a travel time of about 01h 21m by car.
- The straight-line flight distance is about 39.3 miles (63.3 km).
- For a round trip, plan for roughly 02h 42m 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 21m.
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.
Township in Somerset county, New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Mendham and Trenton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mendham and Trenton.
-
1
Start on Mendham Road
25 m · 9 sec · Mendham Road
-
2
Turn left onto Hilltop Road
1.5 mi · 3 min · Hilltop Road
-
3
Turn slight left onto Bernardsville Road
1.5 km · 2 min · Bernardsville Road
-
4
Continue on Mendham Road
1.6 mi · 3 min · Mendham Road
-
5
Continue on Anderson Hill Road
1 mi · 2 min · Anderson Hill Road
-
6
Continue on Mount Airy Road
2 mi · 4 min · Mount Airy Road
-
7
Continue on Mount Airy Road
765 ft · 17 sec · Mount Airy Road
-
8
Take the ramp slight right toward I 287 South: Somerville
1681 ft · 41 sec
-
9
Merge slight left
5.5 mi · 6 min
-
10
Keep slight left
2.6 mi · 3 min
-
11
Take the exit slight left toward US 202 South, US 206 South: Somerville, Flemington
1 km · 43 sec
-
12
Merge slight left
1 mi · 2 min
-
13
Take the exit straight toward US 206 South, NJ 28: Somerville, Princeton
1277 ft · 37 sec
-
14
Enter the roundabout and take exit 2 toward Somerville Circle
525 ft · 7 sec
-
15
Exit the rotary
9.1 mi · 14 min
-
16
Continue straight
7.3 mi · 11 min
-
17
Turn left onto Cherry Hill Road
43 m · 6 sec · Cherry Hill Road
-
18
Turn right onto Mount Lucas Road
150 m · 19 sec · Mount Lucas Road
-
19
Continue on Witherspoon Street
1.1 km · 2 min · Witherspoon Street
-
20
Turn left onto Wiggins Street
722 ft · 27 sec · Wiggins Street
-
21
Turn right onto Vandeventer Avenue
958 ft · 44 sec · Vandeventer Avenue
-
22
Continue on Washington Road
1.6 mi · 4 min · Washington Road
-
23
Enter the roundabout and take exit 1 toward Washington Road
19 m · 4 sec · Brunswick Pike
-
24
Exit the rotary onto Brunswick Pike
4.3 mi · 6 min · Brunswick Pike
-
25
Take the exit slight right
975 ft · 15 sec
-
26
Keep slight left
2012 ft · 31 sec
-
27
Merge slight left onto Brunswick Pike
1.4 km · 1 min · Brunswick Pike
-
28
Continue on Trenton Freeway
3 mi · 4 min · Trenton Freeway
-
29
Take the exit slight right toward Olden Avenue, New York Avenue
145 m · 14 sec
-
30
At the end of the road, turn left onto New York Avenue
147 m · 14 sec · New York Avenue
-
31
Turn left onto North Olden Avenue
1.4 mi · 3 min · North Olden Avenue
-
32
Turn right onto Hamilton Avenue
2992 ft · 1 min · Hamilton Avenue
-
33
Turn right onto Chambers Street
2 m · 1 sec · Chambers Street
-
34
Arrive at your destination
0 m · 1 sec · Chambers Street
Car Route Details
A richer read on the saved driving route between Mendham and Trenton.
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.
Somerville Circle
Exit the rotary
9.09 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.
Chance Rain Showers leaving Mendham and Chance Rain Showers near Trenton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mendham to Trenton?
The road trip is about 46.9 miles (75.5 km) and usually takes 01h 21m 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?
Hillsborough is a useful midpoint, sitting about 23.8 miles from Mendham and 23.1 miles from Trenton.
How much longer is the road route than the straight-line distance?
The direct path is about 39.3 miles (63.3 km), while the road route adds roughly 7.6 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 3:48 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.78 one way or $13.57 round trip. Estimated CO2 is about 14.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Mendham and Chance Rain Showers near Trenton.
Stop Ideas Near Hillsborough
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 Hillsborough.
New Brunswick station
Princeton Junction station
Metropark station
Trenton Transit Center
Flight Path Map
This map shows the direct air route between Mendham and Trenton. Straight-line distance: 39.33 mi (63.3 km).
#1 Mendham
Borough in Morris County, New Jersey
| Population | 4,836 |
| Coordinates | 40.7759300, -74.6007100 |
| Altitude | 187 |
| Country | United States |
#2 Trenton
The capital of New Jersey.
| Population | 82,957 |
| Coordinates | 40.2170500, -74.7429400 |
| Altitude | 17 |
| Country | United States |
End: Chambers Street (-74.742936, 40.217034)
Estimated Travel Time
Distance: 76 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 33m |
| 40 mph (64.37 km/h) | 01h 10m |
| 50 mph (80.47 km/h) | 00h 56m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 40m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $6.78 | $13.57 |
| Mid-grade | $4.60 | $7.63 | $15.27 |
| Premium | $4.95 | $8.22 | $16.45 |
| Diesel | $5.98 | $9.93 | $19.85 |
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.