How far is Back Mountain, PA from Bethlehem, PA?
The driving distance from Back Mountain, PA to Bethlehem, PA is about 78.7 miles (126.6 km), with a travel time of about 01h 27m by car.
- The straight-line flight distance is about 58.9 miles (94.8 km).
- For a round trip, plan for roughly 02h 54m 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 27m.
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 and county seat of Carbon County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers then Mostly Sunny
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Back Mountain and Bethlehem.
Turn-by-Turn Driving Directions
Step-by-step road directions between Back Mountain and Bethlehem.
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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
47.8 mi · 52 min · Pennsylvania Turnpike Northeast Extension
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11
Take the exit slight right toward I 78, US 22, PA 309: Allentown, Harrisburg
2233 ft · 1 min
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12
Turn slight right onto US 22 East: Allentown
975 ft · 29 sec
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13
Merge slight left onto Lehigh Valley Thruway
8.6 mi · 12 min · Lehigh Valley Thruway
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14
Take the exit slight right toward PA 378 South: Bethlehem, Schoenersville Road
1072 ft · 26 sec
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15
Keep slight right to continue on PA 378 South: Bethlehem
1149 ft · 22 sec
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16
Continue on Bethlehem Spur Route
1.8 mi · 2 min · Bethlehem Spur Route
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17
Take the exit slight right toward Eighth Avenue
1208 ft · 33 sec
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18
Turn right onto 8th Avenue
620 ft · 22 sec · 8th Avenue
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19
Turn left onto West Union Boulevard
1 mi · 2 min · West Union Boulevard
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20
Turn left onto Center Street
129 m · 11 sec · Center Street
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21
Turn right onto East Goepp Street
1342 ft · 50 sec · East Goepp Street
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22
Turn right onto Linden Street
17 m · 1 sec · Linden Street
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23
Arrive at your destination
0 m · 1 sec · Linden Street
Car Route Details
A richer read on the saved driving route between Back Mountain and Bethlehem.
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
47.8 mi · 00h 52m
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.
Chance Rain Showers then Mostly Sunny leaving Back Mountain and Chance Rain Showers near Bethlehem.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Back Mountain to Bethlehem?
The road trip is about 78.7 miles (126.6 km) and usually takes 01h 27m 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?
Jim Thorpe is a useful midpoint, sitting about 39.3 miles from Back Mountain and 39.3 miles from Bethlehem.
How much longer is the road route than the straight-line distance?
The direct path is about 58.9 miles (94.8 km), while the road route adds roughly 19.8 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 3:36 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.36 one way or $22.72 round trip. Estimated CO2 is about 24.7 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers then Mostly Sunny around Back Mountain and Chance Rain Showers near Bethlehem.
Stop Ideas Near Jim Thorpe
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 Jim Thorpe.
White Haven, PA
Wilkes-Barre, PA
Scranton, PA
Paoli
Flight Path Map
This map shows the direct air route between Back Mountain and Bethlehem. Straight-line distance: 58.92 mi (94.83 km).
#1 Back Mountain
Unincorporated community
| Population | 26,973 |
| Coordinates | 41.3359100, -75.9963100 |
| Altitude | 389 |
| Country | United States |
#2 Bethlehem
The second most populous city in Northampton County, Pennsylvania.
| Population | 74,892 |
| Coordinates | 40.6259300, -75.3704600 |
| Altitude | 109 |
| Country | United States |
End: Linden Street (-75.370434, 40.625929)
Estimated Travel Time
Distance: 127 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 37m |
| 40 mph (64.37 km/h) | 01h 57m |
| 50 mph (80.47 km/h) | 01h 34m |
| 60 mph (96.56 km/h) | 01h 18m |
| 70 mph (112.65 km/h) | 01h 07m |
| 80 mph (129 km/h) | 00h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $11.36 | $22.72 |
| Mid-grade | $4.60 | $12.79 | $25.57 |
| Premium | $4.95 | $13.77 | $27.54 |
| Diesel | $5.98 | $16.62 | $33.25 |
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 · 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.