How far is Williamstown, PA from Bethlehem, PA?
The driving distance from Williamstown, PA to Bethlehem, PA is about 77.5 miles (124.7 km), with a travel time of about 01h 35m by car.
- The straight-line flight distance is about 65.5 miles (105.4 km).
- For a round trip, plan for roughly 03h 10m 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 35m.
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 southern Schuylkill County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Williamstown and Bethlehem.
Turn-by-Turn Driving Directions
Step-by-step road directions between Williamstown and Bethlehem.
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1
Start on East Market Street
885 ft · 41 sec · East Market Street
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2
Turn right onto South Railroad Street
1452 ft · 1 min · South Railroad Street
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3
Turn left
9.8 mi · 15 min
-
4
Take the ramp slight right
1767 ft · 43 sec
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5
Merge slight left
2.2 mi · 3 min
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6
Take the exit slight right toward PA 125: Ravine
1138 ft · 30 sec
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7
Turn right onto Molleystown Road
2889 ft · 51 sec · Molleystown Road
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8
At the end of the road, turn right onto South Tremont Road
2.3 mi · 4 min · South Tremont Road
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9
Continue on North Tulpehocken Street
1.3 mi · 3 min · North Tulpehocken Street
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10
Turn left onto East Wood Street
1094 ft · 18 sec · East Wood Street
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11
Continue on Rock Road
2108 ft · 1 min · Rock Road
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12
Turn right onto Bethel Road
2.9 mi · 4 min · Bethel Road
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13
Continue on Lancaster Avenue
4.8 mi · 7 min · Lancaster Avenue
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14
Take the exit left toward I 78 East, US 22 East: Allentown
1126 ft · 28 sec
-
15
Merge slight left onto William Penn Highway
38 mi · 45 min · William Penn Highway
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16
Keep slight right to continue on Lehigh Valley Thruway
10.3 mi · 14 min · Lehigh Valley Thruway
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17
Take the exit slight right toward PA 378 South: Bethlehem, Schoenersville Road
1072 ft · 26 sec
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18
Keep slight right to continue on PA 378 South: Bethlehem
1149 ft · 22 sec
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19
Continue on Bethlehem Spur Route
1.8 mi · 2 min · Bethlehem Spur Route
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20
Take the exit slight right toward Eighth Avenue
1208 ft · 33 sec
-
21
Turn right onto 8th Avenue
620 ft · 22 sec · 8th Avenue
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22
Turn left onto West Union Boulevard
1 mi · 2 min · West Union Boulevard
-
23
Turn left onto Center Street
129 m · 11 sec · Center Street
-
24
Turn right onto East Goepp Street
1342 ft · 50 sec · East Goepp Street
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25
Turn right onto Linden Street
17 m · 1 sec · Linden Street
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26
Arrive at your destination
0 m · 1 sec · Linden Street
Car Route Details
A richer read on the saved driving route between Williamstown and Bethlehem.
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.
William Penn Highway
Merge slight left onto William Penn Highway
38 mi · 00h 45m
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.
Partly Cloudy leaving Williamstown and Mostly Sunny near Bethlehem.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Williamstown to Bethlehem?
The road trip is about 77.5 miles (124.7 km) and usually takes 01h 35m 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?
Port Clinton is a useful midpoint, sitting about 38.8 miles from Williamstown and 38.6 miles from Bethlehem.
How much longer is the road route than the straight-line distance?
The direct path is about 65.5 miles (105.4 km), while the road route adds roughly 12 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 3:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.19 one way or $24.37 round trip. Estimated CO2 is about 24.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Williamstown and Mostly Sunny near Bethlehem.
Stop Ideas Near Port Clinton
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 Port Clinton.
White Haven, PA
Lancaster station
Mount Joy
Coatesville
Flight Path Map
This map shows the direct air route between Williamstown and Bethlehem. Straight-line distance: 65.5 mi (105.42 km).
#1 Williamstown
Situated in the eastern part of Dauphin County, Pennsylvania, at an elevation of approximately 732 feet above sea level, this borough sits within the Ridge and Valley Appalachian province.
| Population | 0 |
| Coordinates | 40.5800900, -76.6177400 |
| Altitude | 223 |
| 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: 125 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 34m |
| 40 mph (64.37 km/h) | 01h 56m |
| 50 mph (80.47 km/h) | 01h 33m |
| 60 mph (96.56 km/h) | 01h 17m |
| 70 mph (112.65 km/h) | 01h 06m |
| 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 | $4.46 | $12.19 | $24.37 |
| Mid-grade | $4.93 | $13.45 | $26.89 |
| Premium | $5.31 | $14.48 | $28.97 |
| Diesel | $6.55 | $17.88 | $35.76 |
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 · Oct 15, 2026