How far is Hamilton Square, NJ from Union, NJ?

The driving distance from Hamilton Square, NJ to Union, NJ is about 49.3 miles (79.4 km), with a travel time of about 00h 54m by car.

  • The straight-line flight distance is about 38.4 miles (61.8 km).
  • For a round trip, plan for roughly 01h 48m of driving time before adding stops, traffic, or weather delays.
  • A comfortable departure window is usually 8:00 AM to 10:00 AM EST.
Trip Tools

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.

Reverse Route
Quick Snapshot
Road
49.33 mi
00h 54m
Flight
38.42 mi
61.83 km direct

This route works well as a day trip with time at the destination.

Learn Distance

Choose another destination from Hamilton Square.

Flight Distance

Direct air line
38.42 mi
Kilometers
61.83 km
Flight Time
00h 04m

Driving Distance

Road route
49.33 mi
Kilometers
79.39 km
Drive Time
00h 54m

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 54m.

Arrival Snapshot
Arrive in Union
Fri, Nov 6, 2:46 PM EST
Return by in Hamilton Square
Fri, Nov 6, 3:41 PM EST
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Hamilton Square
2026-11-06T13:52
Arrive Union
Fri, Nov 6, 2:46 PM EST
Route Timing
00h 54m
One way by road
Best Departure Window
8:00 AM to 10:00 AM EST
Aim for a morning departure
Arrive between
8:54 AM to 10:54 AM EST

A morning start gives you useful time at the destination and keeps the return out of the late evening.

Leave by
4:42 PM EST
Keeps a same-day return open with about 03h 00m at the destination.
Back in Hamilton Square
9:30 PM EST
Morning start is best

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.

Mid-route stop
Milltown
NJ

Borough in Middlesex County, New Jersey

From Hamilton Square
22.9 mi
00h 27m
To Union
26.4 mi
00h 27m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
69°F
Today

Rain

Starts
Fri, Nov 6 8:00 AM EST
Wind
0 to 5 mph NW
Destination
Union Weather
NJ
Live fallback forecast
65°F
Overnight
Using Hillside as the closest live forecast in the Union County weather hub.

Rain

Starts
Fri, Nov 6 1:00 AM EST
Wind
0 to 5 mph SW

Driving Route Map

The map below follows the saved road route between Hamilton Square and Union.

Turn-by-Turn Driving Directions

Step-by-step road directions between Hamilton Square and Union.

  1. 1

    Start on Coleman Road

    45 m · 10 sec · Coleman Road

  2. 2

    Turn left onto Nottingham Way

    1.4 km · 2 min · Nottingham Way

  3. 3

    Turn left onto New Jersey Highway 33

    1.1 mi · 2 min · New Jersey Highway 33

  4. 4

    Turn left

    4.5 mi · 6 min

  5. 5

    Continue on Mercer Street

    1.6 mi · 3 min · Mercer Street

  6. 6

    Turn right onto West Ward Street

    157 m · 16 sec · West Ward Street

  7. 7

    Turn left onto South Main Street

    1243 ft · 35 sec · South Main Street

  8. 8

    Turn slight right

    29 m · 4 sec

  9. 9

    Turn right onto Franklin Street

    1.2 km · 2 min · Franklin Street

  10. 10

    Turn left onto New Jersey Turnpike

    22.9 mi · 26 min · New Jersey Turnpike

  11. 11

    Take the exit slight right toward US 9, GSP: Garden State Parkway, Woodbridge

    2656 ft · 1 min

  12. 12

    Keep slight right to continue on GSP North: Garden State Parkway

    1.2 km · 2 min

  13. 13

    Merge slight left onto Garden State Parkway

    11.2 mi · 16 min · Garden State Parkway

  14. 14

    Take the exit slight right toward US 22, NJ 82: Hillside

    1526 ft · 39 sec

  15. 15

    Merge slight left

    48 m · 3 sec

  16. 16

    Take the exit slight right toward NJ 82: Morris Avenue, Kean University, Elizabeth

    878 ft · 24 sec

  17. 17

    Turn slight right onto Morris Avenue

    690 ft · 15 sec · Morris Avenue

  18. 18

    Turn slight right

    155 m · 44 sec

  19. 19

    Turn left onto Morris Avenue

    2494 ft · 55 sec · Morris Avenue

  20. 20

    Turn right onto Harding Avenue

    646 ft · 29 sec · Harding Avenue

  21. 21

    Turn right onto Vauxhall Road

    10 m · 5 sec · Vauxhall Road

  22. 22

    Turn left onto Harding Avenue

    74 m · 11 sec · Harding Avenue

  23. 23

    Arrive at your destination

    0 m · 1 sec · Harding Avenue

Car Route Details

A richer read on the saved driving route between Hamilton Square and Union.

OSRM road route
Drive Character

Highway-focused drive

Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.

Directions
23 steps
14 turns on the saved route
Ramps & Exits
5
2 merges, 3 ramps or exits
Navigation Density
46.7 / 100 mi
Decision points by distance
Main Roads
New Jersey Turnpike
22.9 mi · 46%
Garden State Parkway
11.2 mi · 23%
Mercer Street
1.65 mi · 3%
New Jersey Highway 33
1.07 mi · 2%
Nottingham Way
0.86 mi · 2%
Franklin Street
0.75 mi · 2%
Longest Stretch

New Jersey Turnpike

Turn left onto New Jersey Turnpike

22.9 mi · 00h 26m

Route Summary

A quick read on whether this route feels easy, ambitious, or worth planning around.

Trip Read

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.

Drive Time
00h 54m
Day trip friendly
Same-Day Return
01h 48m
Round-trip wheel time
Road vs Air
+10.9 mi
38.4 mi direct line
Halfway Stop
Milltown
00h 27m from Hamilton Square
Leave By
4:42 PM EST
Morning start is best
Weather Watch

Rain leaving Hamilton Square and Rain near Union.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Hamilton Square to Union?

The road trip is about 49.3 miles (79.4 km) and usually takes 00h 54m 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?

Milltown is a useful midpoint, sitting about 22.9 miles from Hamilton Square and 26.4 miles from Union.

How much longer is the road route than the straight-line distance?

The direct path is about 38.4 miles (61.8 km), while the road route adds roughly 10.9 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 EST. If you want a more comfortable same-day return, try to leave by 4:42 PM EST.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $7.13 one way or $14.25 round trip. Estimated CO2 is about 15.5 kg one way.

What should you check before leaving?

Before you leave, expect Rain around Hamilton Square and Rain near Union.

Stop Ideas Near Milltown

Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.

Mid-route Guidance
Local place coverage is thin around Milltown, so nearby transit and meeting points are shown instead.
Reviewed stop coverage is still thin around this midpoint, so practical transit waypoints are shown on the right.

Transit and Meeting Points

Useful pickup, handoff, or rendezvous points close to Milltown.

RAIL

New Brunswick station

4 mi away
French and Albany Streets
RAIL

Metropark station

16 mi away
100 Middlesex-Essex Turnpike
RAIL

Princeton Junction station

22 mi away
2 Wallace Road
RAIL

Newark Liberty International Airport

35 mi away
Newark Liberty International Airport

Flight Path Map

This map shows the direct air route between Hamilton Square and Union. Straight-line distance: 38.42 mi (61.83 km).

Photo coming soon

#1 Hamilton Square

Hamilton Square is a place in New Jersey, United States.

Population0
Coordinates40.2273300, -74.6532100
Altitude31
CountryUnited States
Union

#2 Union

A city in Union County, New Jersey.

Population67,137
Coordinates40.6976000, -74.2632000
Altitude30
CountryUnited States
Start: Coleman Road (-74.653229, 40.227336)
End: Harding Avenue (-74.26348, 40.697581)

Estimated Travel Time

Distance: 79 km by road

SpeedTime
30 mph (48.3 km/h)01h 38m
40 mph (64.37 km/h)01h 14m
50 mph (80.47 km/h)00h 59m
60 mph (96.56 km/h)00h 49m
70 mph (112.65 km/h)00h 42m
80 mph (129 km/h)00h 36m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
1.74 gal
6.59 L · about $7.13
Round trip
$14.25
3.48 gal · 13.18 L
Estimated CO2
15.5 kg one way
Round trip: 30.9 kg / 68 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $4.10 $7.13 $14.25
Mid-grade $4.72 $8.22 $16.44
Premium $5.04 $8.77 $17.54
Diesel $6.33 $11.02 $22.04

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 · Nov 06, 2026

There is no time difference between Hamilton Square and Union. The current time is 13:52:27.

Distance to Other Cities

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.