How far is Middletown, NJ from Mountainside, NJ?
The driving distance from Middletown, NJ to Mountainside, NJ is about 28.9 miles (46.5 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 23 miles (37 km).
- For a round trip, plan for roughly 01h 37m 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 48m.
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.
City in New Jersey
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Middletown and Mountainside.
Turn-by-Turn Driving Directions
Step-by-step road directions between Middletown and Mountainside.
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1
Start on Kings Highway
1023 ft · 25 sec · Kings Highway
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2
Turn left onto New Monmouth Road
1507 ft · 32 sec · New Monmouth Road
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3
Turn left
5.2 mi · 8 min
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4
Take the exit slight left toward GSP: Clark Street
2550 ft · 1 min
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5
Keep slight right to continue on Local, All Exits
1071 ft · 14 sec
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6
Merge slight left onto Garden State Parkway
17.4 mi · 23 min · Garden State Parkway
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7
Take the exit slight right toward Clark, Westfield
781 ft · 12 sec
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8
Keep slight left to continue on Westfield, Brant Avenue, Rahway
596 ft · 16 sec
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9
Turn left onto Central Avenue
2.9 mi · 8 min · Central Avenue
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10
At the end of the road, turn right onto East Broad Street
59 m · 10 sec · East Broad Street
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11
Turn left onto Mountain Avenue East
1.1 mi · 3 min · Mountain Avenue East
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12
Turn left onto New Providence Road
3259 ft · 2 min · New Providence Road
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13
Turn right onto Birch Hill Road
93 m · 16 sec · Birch Hill Road
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14
Turn right onto Watchung Avenue
56 m · 9 sec · Watchung Avenue
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15
Turn left
532 ft · 39 sec
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16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Middletown and Mountainside.
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
17.4 mi · 00h 23m
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 near Middletown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Middletown to Mountainside?
The road trip is about 28.9 miles (46.5 km) and usually takes 00h 48m 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?
South Amboy is a useful midpoint, sitting about 14.4 miles from Middletown and 14.4 miles from Mountainside.
How much longer is the road route than the straight-line distance?
The direct path is about 23 miles (37 km), while the road route adds roughly 5.9 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 EDT. If you want a more comfortable same-day return, try to leave by 4:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.17 one way or $8.34 round trip. Estimated CO2 is about 9.1 kg one way.
What should you check before leaving?
Before leaving, the latest forecast around Middletown is Mostly Sunny.
Stop Ideas Near South Amboy
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 South Amboy.
Metropark station
New Brunswick station
Newark Liberty International Airport
Pennsylvania Station
Flight Path Map
This map shows the direct air route between Middletown and Mountainside. Straight-line distance: 22.98 mi (36.99 km).
#1 Middletown
Middletown is a place in New Jersey, United States.
| Population | 0 |
| Coordinates | 40.3942800, -74.1170900 |
| Altitude | 36 |
| Country | United States |
#2 Mountainside
Town
| Population | 6,876 |
| Coordinates | 40.6723200, -74.3573700 |
| Altitude | 46 |
| Country | United States |
End: Mountainside (-74.35737, 40.67232)
Estimated Travel Time
Distance: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 57m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 28m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.17 | $8.34 |
| Mid-grade | $4.60 | $4.69 | $9.38 |
| Premium | $4.95 | $5.05 | $10.11 |
| Diesel | $5.98 | $6.10 | $12.20 |
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.