How far is Allentown, PA from Williamstown, PA?
The driving distance from Allentown, PA to Williamstown, PA is about 284.4 miles (457.7 km), with a travel time of about 05h 40m by car.
- The straight-line flight distance is about 243.7 miles (392.2 km).
- For a round trip, plan for roughly 11h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 05h 40m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Township in Franklin County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Allentown and Williamstown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Williamstown.
-
1
Start on Tilghman Street
5 mi · 8 min · Tilghman Street
-
2
Take the ramp slight left toward US 22 West: Harrisburg
698 ft · 18 sec
-
3
Merge slight left onto Lehigh Valley Thruway
1.1 km · 54 sec · Lehigh Valley Thruway
-
4
Merge slight left onto William Penn Highway
43.1 mi · 52 min · William Penn Highway
-
5
Continue on 78th Division Highway
7.6 mi · 9 min · 78th Division Highway
-
6
Keep slight left to continue on I 81 South: Harrisburg
1.1 km · 49 sec
-
7
Merge slight left
36.6 mi · 44 min
-
8
Take the exit slight right toward US 11: New Kingstown, Middlesex
1419 ft · 49 sec
-
9
Keep slight right to continue on US 11 South
61 m · 8 sec
-
10
Merge slight left onto Harrisburg Pike
1.6 km · 2 min · Harrisburg Pike
-
11
Take the exit straight toward I 76, PATP
2453 ft · 1 min
-
12
Keep slight right to continue on I 76 West: Pittsburgh
1304 ft · 37 sec
-
13
Merge slight left onto Pennsylvania Turnpike
151.8 mi · 2 hr 47 min · Pennsylvania Turnpike
-
14
Take the exit slight right toward I 70 West, US 119, PA Turnpike 66 Toll: Greensburg, Wheeling WV, New Stanton
2253 ft · 55 sec
-
15
Keep slight right to continue on I 70 West: New Stanton, Washington PA, Wheeling WV, Columbus OH
20.1 mi · 28 min
-
16
Take the exit slight right toward Toll PA 43: California, Pittsburgh
2143 ft · 52 sec
-
17
Merge slight left onto Mon/Fayette Expressway
7.1 mi · 8 min · Mon/Fayette Expressway
-
18
Take the exit slight right toward PA 88 South: West Brownsville, Fredericktown
2436 ft · 59 sec
-
19
Keep slight right
6.1 mi · 9 min
-
20
Turn right onto Main Street
2 mi · 4 min · Main Street
-
21
Turn right onto 2nd Avenue
853 ft · 39 sec · 2nd Avenue
-
22
Turn right onto Taylor Avenue
14 m · 2 sec · Taylor Avenue
-
23
Arrive at your destination
0 m · 1 sec · Taylor Avenue
Car Route Details
A richer read on the saved driving route between Allentown and Williamstown.
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
Merge slight left onto Pennsylvania Turnpike
152 mi · 02h 47m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Rain Showers Likely leaving Allentown and Rain Showers Likely near Williamstown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Williamstown?
The road trip is about 284.4 miles (457.7 km) and usually takes 05h 40m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Metal is a useful midpoint, sitting about 142 miles from Allentown and 142.4 miles from Williamstown.
How much longer is the road route than the straight-line distance?
The direct path is about 243.7 miles (392.2 km), while the road route adds roughly 40.7 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 5:40 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $41.02 one way or $82.05 round trip. Estimated CO2 is about 89.2 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Allentown and Rain Showers Likely near Williamstown.
Stop Ideas Near Metal
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 Metal.
Hancock, MD
Hagerstown, MD
Huntingdon
Martinsburg station
Flight Path Map
This map shows the direct air route between Allentown and Williamstown. Straight-line distance: 243.7 mi (392.2 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Williamstown
Borough in northeastern Dauphin County, Pennsylvania, United States
| Population | 1,386 |
| Coordinates | 39.9792400, -80.0408900 |
| Altitude | 256 |
| Country | United States |
End: Williamstown (-80.04089, 39.97924)
Estimated Travel Time
Distance: 458 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 28m |
| 40 mph (64.37 km/h) | 07h 06m |
| 50 mph (80.47 km/h) | 05h 41m |
| 60 mph (96.56 km/h) | 04h 44m |
| 70 mph (112.65 km/h) | 04h 03m |
| 80 mph (129 km/h) | 03h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $41.02 | $82.05 |
| Mid-grade | $4.60 | $46.17 | $92.35 |
| Premium | $4.95 | $49.74 | $99.48 |
| Diesel | $5.98 | $60.04 | $120.08 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.