How far is Back Mountain, PA from Norristown, PA?
The driving distance from Back Mountain, PA to Norristown, PA is about 107.6 miles (173.1 km), with a travel time of about 01h 53m by car.
- The straight-line flight distance is about 90.7 miles (145.9 km).
- For a round trip, plan for roughly 03h 47m 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 53m.
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 of Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Mostly Cloudy then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Back Mountain and Norristown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Back Mountain and Norristown.
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1
Start on the route
2551 ft · 42 sec
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2
Turn right onto Memorial Highway
1.6 mi · 3 min · Memorial Highway
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3
Enter the roundabout and take exit 2 toward Memorial Highway
37 m · 2 sec · Memorial Highway
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4
Exit the roundabout onto Memorial Highway
4.7 mi · 10 min · Memorial Highway
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5
Continue straight
5.5 mi · 8 min
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6
Continue straight
4.3 mi · 7 min
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7
Take the exit slight right toward PATP
1823 ft · 44 sec
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8
Keep slight left to continue on PATP
550 ft · 13 sec
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9
Keep slight left to continue on I 476 South: Allentown
2318 ft · 57 sec
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10
Merge slight left onto Pennsylvania Turnpike Northeast Extension
85.3 mi · 1 hr 32 min · Pennsylvania Turnpike Northeast Extension
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11
Continue on Pennsylvania Turnpike Northeast Extension
1558 ft · 24 sec · Pennsylvania Turnpike Northeast Extension
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12
Keep slight left to continue on Pennsylvania Turnpike Northeast Extension
1179 ft · 18 sec · Pennsylvania Turnpike Northeast Extension
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13
Continue on Mid-County Expressway
1.4 km · 1 min · Mid-County Expressway
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14
Take the exit slight right toward Norristown, Ridge Pike
1575 ft · 38 sec
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15
Turn straight onto West Ridge Pike
1.1 km · 2 min · West Ridge Pike
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16
Continue on East Main Street
908 ft · 24 sec · East Main Street
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17
Continue on East Ridge Pike
1708 ft · 54 sec · East Ridge Pike
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18
Turn right onto Fairfield Road
2521 ft · 1 min · Fairfield Road
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19
Continue on East Fornance Street
1 mi · 3 min · East Fornance Street
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20
Turn left onto Powell Street
1718 ft · 1 min · Powell Street
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21
Turn sharp right onto Spring Alley
14 m · 3 sec · Spring Alley
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22
Arrive at your destination
0 m · 1 sec · Spring Alley
Car Route Details
A richer read on the saved driving route between Back Mountain and Norristown.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Pennsylvania Turnpike Northeast Extension
Merge slight left onto Pennsylvania Turnpike Northeast Extension
85.3 mi · 01h 32m
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.
Rain Showers leaving Back Mountain and Mostly Cloudy then Chance Showers And Thunderstorms near Norristown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Back Mountain to Norristown?
The road trip is about 107.6 miles (173.1 km) and usually takes 01h 53m 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?
Slatington is a useful midpoint, sitting about 53.7 miles from Back Mountain and 53.8 miles from Norristown.
How much longer is the road route than the straight-line distance?
The direct path is about 90.7 miles (145.9 km), while the road route adds roughly 16.9 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 2:42 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.49 one way or $30.97 round trip. Estimated CO2 is about 33.7 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Back Mountain and Mostly Cloudy then Chance Showers And Thunderstorms near Norristown.
Stop Ideas Near Slatington
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 Slatington.
White Haven, PA
Wilkes-Barre, PA
Scranton, PA
Paoli
Flight Path Map
This map shows the direct air route between Back Mountain and Norristown. Straight-line distance: 90.67 mi (145.92 km).
#1 Back Mountain
Unincorporated community
| Population | 26,973 |
| Coordinates | 41.3359100, -75.9963100 |
| Altitude | 389 |
| Country | United States |
#2 Norristown
County seat of Montgomery County, Pennsylvania, United States
| Population | 34,323 |
| Coordinates | 40.1215000, -75.3399000 |
| Altitude | 48 |
| Country | United States |
End: Spring Alley (-75.339854, 40.121493)
Estimated Travel Time
Distance: 173 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 34m |
| 40 mph (64.37 km/h) | 02h 41m |
| 50 mph (80.47 km/h) | 02h 09m |
| 60 mph (96.56 km/h) | 01h 47m |
| 70 mph (112.65 km/h) | 01h 32m |
| 80 mph (129 km/h) | 01h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $15.49 | $30.97 |
| Mid-grade | $4.60 | $17.43 | $34.86 |
| Premium | $4.95 | $18.78 | $37.55 |
| Diesel | $5.98 | $22.66 | $45.33 |
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 Pennsylvania · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.