How far is Union City, NJ from Williamstown, NJ?
The driving distance from Union City, NJ to Williamstown, NJ is about 100.1 miles (161.1 km), with a travel time of about 02h 08m by car.
- The straight-line flight distance is about 91.3 miles (146.9 km).
- For a round trip, plan for roughly 04h 16m 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 02h 08m.
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.
Borough in Mercer County, New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Union City and Williamstown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union City and Williamstown.
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1
Start on 45th Street
606 ft · 33 sec · 45th Street
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2
Turn left onto John F. Kennedy Boulevard
2897 ft · 1 min · John F. Kennedy Boulevard
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3
Turn slight left
776 ft · 26 sec
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4
Take the ramp slight right toward NJ 495 West, NJTP West
876 ft · 22 sec
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5
Continue on NJ 495 West
114 m · 11 sec
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6
Merge slight left
1.1 km · 1 min
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7
Keep slight left to continue on I 95 South: Newark
1 km · 1 min
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8
Merge slight left onto New Jersey Turnpike
5.6 mi · 8 min · New Jersey Turnpike
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9
Keep slight left to continue on New Jersey Turnpike
55 mi · 1 hr 5 min · New Jersey Turnpike
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10
Keep slight left to continue on New Jersey Turnpike
16.8 mi · 19 min · New Jersey Turnpike
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11
Take the exit slight right toward NJ 73: Mount Laurel, Camden
2533 ft · 56 sec
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12
Keep slight left to continue on NJ 73 South: Marlton, Atlantic City
1867 ft · 46 sec
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13
Merge slight left
2452 ft · 42 sec
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14
Continue straight
5.1 mi · 7 min
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15
Continue straight
1.3 mi · 2 min
-
16
Continue straight
4.9 mi · 7 min
-
17
Take the exit slight right
1579 ft · 43 sec
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18
Turn straight onto Taunton Road
1.7 mi · 3 min · Taunton Road
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19
Continue on Williamstown Road
4.1 mi · 6 min · Williamstown Road
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20
Continue on Sicklerville Road
1.5 mi · 3 min · Sicklerville Road
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21
Turn left
11 m · 4 sec
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22
Turn right
40 m · 9 sec
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23
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Union City and Williamstown.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
New Jersey Turnpike
Keep slight left to continue on New Jersey Turnpike
55 mi · 01h 05m
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.
Showers And Thunderstorms leaving Union City and Rain Showers Likely near Williamstown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union City to Williamstown?
The road trip is about 100.1 miles (161.1 km) and usually takes 02h 08m 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?
Hightstown is a useful midpoint, sitting about 50 miles from Union City and 50 miles from Williamstown.
How much longer is the road route than the straight-line distance?
The direct path is about 91.3 miles (146.9 km), while the road route adds roughly 8.8 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 2:14 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.42 one way or $28.85 round trip. Estimated CO2 is about 31.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Union City and Rain Showers Likely near Williamstown.
Stop Ideas Near Hightstown
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 Hightstown.
Princeton Junction station
Trenton Transit Center
New Brunswick station
Metropark station
Flight Path Map
This map shows the direct air route between Union City and Williamstown. Straight-line distance: 91.28 mi (146.9 km).
#1 Union City
The most populous city in Hudson County, New Jersey.
| Population | 67,982 |
| Coordinates | 40.7795500, -74.0237500 |
| Altitude | 53 |
| Country | United States |
#2 Williamstown
Town in Massachusetts
| Population | 15,567 |
| Coordinates | 39.6862300, -74.9951700 |
| Altitude | 44 |
| Country | United States |
End: Williamstown (-74.99517, 39.68623)
Estimated Travel Time
Distance: 161 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 20m |
| 40 mph (64.37 km/h) | 02h 30m |
| 50 mph (80.47 km/h) | 02h 00m |
| 60 mph (96.56 km/h) | 01h 40m |
| 70 mph (112.65 km/h) | 01h 25m |
| 80 mph (129 km/h) | 01h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $14.42 | $28.85 |
| Mid-grade | $4.60 | $16.23 | $32.47 |
| Premium | $4.95 | $17.49 | $34.98 |
| Diesel | $5.98 | $21.11 | $42.22 |
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 · May 06, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.