How far is Allentown, PA from Clay, PA?
The driving distance from Allentown, PA to Clay, PA is about 66.3 miles (106.7 km), with a travel time of about 01h 23m by car.
- The straight-line flight distance is about 48.5 miles (78 km).
- For a round trip, plan for roughly 02h 46m 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 23m.
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.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Allentown and Clay.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Clay.
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1
Start on Tilghman Street
5 mi · 8 min · Tilghman Street
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2
Take the ramp slight left toward US 22 West: Harrisburg
698 ft · 18 sec
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3
Merge slight left onto Lehigh Valley Thruway
1.1 km · 54 sec · Lehigh Valley Thruway
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4
Merge slight left onto William Penn Highway
38.5 mi · 46 min · William Penn Highway
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5
Take the exit slight right toward PA 501: Bethel
806 ft · 29 sec
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6
Turn left onto Lancaster Avenue
1546 ft · 43 sec · Lancaster Avenue
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7
Continue on Lancaster Avenue
1.2 mi · 1 min · Lancaster Avenue
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8
At the end of the road, turn right onto Lancaster Avenue
4.1 mi · 5 min · Lancaster Avenue
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9
Continue on North College Street
5.5 mi · 7 min · North College Street
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10
Continue on Stiegel Pike
6 mi · 7 min · Stiegel Pike
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11
Continue on Furnace Hill Pike
1.5 mi · 2 min · Furnace Hill Pike
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12
Continue on Furnace Hills Pike
1.2 km · 56 sec · Furnace Hills Pike
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13
Turn left onto East 28th Division Highway
2.6 mi · 4 min · East 28th Division Highway
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14
Arrive at your destination
0 m · 1 sec · West Main Street
Car Route Details
A richer read on the saved driving route between Allentown and Clay.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
William Penn Highway
Merge slight left onto William Penn Highway
38.5 mi · 00h 46m
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.
Sunny leaving Allentown and Mostly Sunny near Clay.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Clay?
The road trip is about 66.3 miles (106.7 km) and usually takes 01h 23m 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?
Centerport is a useful midpoint, sitting about 33.1 miles from Allentown and 33.2 miles from Clay.
How much longer is the road route than the straight-line distance?
The direct path is about 48.5 miles (78 km), while the road route adds roughly 17.8 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 3:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.56 one way or $19.12 round trip. Estimated CO2 is about 20.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Allentown and Mostly Sunny near Clay.
Stop Ideas Near Centerport
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 Centerport.
Lancaster station
Coatesville
Downingtown
Parkesburg
Flight Path Map
This map shows the direct air route between Allentown and Clay. Straight-line distance: 48.45 mi (77.97 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Clay
Census-designated place in Lancaster County, Pennsylvania
| Population | 6,939 |
| Coordinates | 40.2184300, -76.2555100 |
| Altitude | 108 |
| Country | United States |
End: Clay (-76.25551, 40.21843)
Estimated Travel Time
Distance: 107 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 12m |
| 40 mph (64.37 km/h) | 01h 39m |
| 50 mph (80.47 km/h) | 01h 19m |
| 60 mph (96.56 km/h) | 01h 06m |
| 70 mph (112.65 km/h) | 00h 56m |
| 80 mph (129 km/h) | 00h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $9.56 | $19.12 |
| Mid-grade | $4.60 | $10.76 | $21.52 |
| Premium | $4.95 | $11.59 | $23.18 |
| Diesel | $5.98 | $13.99 | $27.99 |
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.