How far is Trenton, NJ from Monmouth Junction, NJ?
The driving distance from Trenton, NJ to Monmouth Junction, NJ is about 17 miles (27.3 km), with a travel time of about 00h 25m by car.
- The straight-line flight distance is about 15.2 miles (24.5 km).
- For a round trip, plan for roughly 00h 50m 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 25m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Township in Mercer County, New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Trenton and Monmouth Junction.
Turn-by-Turn Driving Directions
Step-by-step road directions between Trenton and Monmouth Junction.
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1
Start on Chambers Street
2 m · 6 sec · Chambers Street
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2
Turn left onto Hamilton Avenue
2.5 mi · 5 min · Hamilton Avenue
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3
Take the ramp slight right toward I 295 North
1791 ft · 23 sec
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4
Keep slight left to continue on I 295 North
1320 ft · 17 sec
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5
Merge slight left
2.9 mi · 3 min
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6
Take the exit slight right toward US 1: New Brunswick, Trenton
1116 ft · 15 sec
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7
Keep slight right to continue on US 1 North: New Brunswick
2872 ft · 1 min
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8
Merge slight left onto Brunswick Pike
7.3 mi · 10 min · Brunswick Pike
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9
Take the exit slight right toward Kingston, Monmouth Junction
107 m · 10 sec
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10
Keep slight right
51 m · 5 sec
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11
Turn straight onto Ridge Road
2.8 mi · 5 min · Ridge Road
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12
Arrive at your destination
0 m · 1 sec · Ridge Road
Car Route Details
A richer read on the saved driving route between Trenton and Monmouth Junction.
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.
Brunswick Pike
Merge slight left onto Brunswick Pike
7.33 mi · 00h 10m
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.
Chance Showers And Thunderstorms leaving Trenton and Chance Rain Showers near Monmouth Junction.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Trenton to Monmouth Junction?
The road trip is about 17 miles (27.3 km) and usually takes 00h 25m 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?
Lawrence is a useful midpoint, sitting about 8.5 miles from Trenton and 8.5 miles from Monmouth Junction.
How much longer is the road route than the straight-line distance?
The direct path is about 15.2 miles (24.5 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 7:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.45 one way or $4.90 round trip. Estimated CO2 is about 5.3 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Trenton and Chance Rain Showers near Monmouth Junction.
Stop Ideas Near Lawrence
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 Lawrence.
Princeton Junction station
Trenton Transit Center
New Brunswick station
Cornwells Heights
Flight Path Map
This map shows the direct air route between Trenton and Monmouth Junction. Straight-line distance: 15.24 mi (24.53 km).
#1 Trenton
The capital of New Jersey.
| Population | 82,957 |
| Coordinates | 40.2170500, -74.7429400 |
| Altitude | 17 |
| Country | United States |
#2 Monmouth Junction
Census-designated place in South Brunswick, Township, New Jersey
| Population | 2,887 |
| Coordinates | 40.3790000, -74.5465400 |
| Altitude | 28 |
| Country | United States |
End: Monmouth Junction (-74.54654, 40.379)
Estimated Travel Time
Distance: 27 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 33m |
| 40 mph (64.37 km/h) | 00h 25m |
| 50 mph (80.47 km/h) | 00h 20m |
| 60 mph (96.56 km/h) | 00h 16m |
| 70 mph (112.65 km/h) | 00h 14m |
| 80 mph (129 km/h) | 00h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $2.45 | $4.90 |
| Mid-grade | $4.60 | $2.76 | $5.52 |
| Premium | $4.95 | $2.97 | $5.94 |
| Diesel | $5.98 | $3.59 | $7.18 |
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 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.