How far is Saint Clair, PA from Allentown, PA?
The driving distance from Saint Clair, PA to Allentown, PA is about 48.4 miles (77.9 km), with a travel time of about 01h 03m by car.
- The straight-line flight distance is about 37.5 miles (60.4 km).
- For a round trip, plan for roughly 02h 06m 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 03m.
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 Cloudy
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Saint Clair and Allentown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Clair and Allentown.
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1
Start on North 2nd Street
24 m · 9 sec · North 2nd Street
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2
Turn left onto West Hancock Street
580 ft · 18 sec · West Hancock Street
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3
Turn left onto Joseph H. Long Boulevard
3273 ft · 53 sec · Joseph H. Long Boulevard
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4
Continue on Pottsville Saint Clair Highway
1.6 km · 1 min · Pottsville Saint Clair Highway
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5
Continue on North Claude A. Lord Boulevard
1.6 mi · 2 min · North Claude A. Lord Boulevard
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6
Continue on Pottsville Boulevard
1152 ft · 15 sec · Pottsville Boulevard
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7
Continue on Route 61 South
3 mi · 4 min · Route 61 South
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8
Continue on Center Avenue
10.6 mi · 13 min · Center Avenue
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9
Continue on Centre Street
2.7 mi · 4 min · Centre Street
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10
Take the exit slight right toward I 78 East, US 22 East: Allentown
1423 ft · 41 sec
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11
Merge slight left onto William Penn Highway
21.6 mi · 27 min · William Penn Highway
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12
Keep slight right to continue on Lehigh Valley Thruway
1.5 km · 1 min · Lehigh Valley Thruway
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13
Take the exit slight right toward Cetronia
1053 ft · 27 sec
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14
Turn straight onto Tilghman Street
4.9 mi · 8 min · Tilghman Street
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15
Arrive at your destination
0 m · 1 sec · Tilghman Street
Car Route Details
A richer read on the saved driving route between Saint Clair and Allentown.
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
21.6 mi · 00h 27m
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.
Mostly Cloudy leaving Saint Clair and Mostly Sunny near Allentown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Clair to Allentown?
The road trip is about 48.4 miles (77.9 km) and usually takes 01h 03m 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?
Lenhartsville is a useful midpoint, sitting about 23.9 miles from Saint Clair and 24.5 miles from Allentown.
How much longer is the road route than the straight-line distance?
The direct path is about 37.5 miles (60.4 km), while the road route adds roughly 10.9 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 4:24 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.63 one way or $15.27 round trip. Estimated CO2 is about 15.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Saint Clair and Mostly Sunny near Allentown.
Stop Ideas Near Lenhartsville
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 Lenhartsville.
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Downingtown
Exton
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Flight Path Map
This map shows the direct air route between Saint Clair and Allentown. Straight-line distance: 37.54 mi (60.42 km).
#1 Saint Clair
Positioned within the Ridge and Valley province of the Appalachian Mountains in eastern Pennsylvania, this borough is located in central Schuylkill County.
| Population | 0 |
| Coordinates | 40.7206500, -76.1910500 |
| Altitude | 225 |
| Country | United States |
#2 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
End: Tilghman Street (-75.490007, 40.608068)
Estimated Travel Time
Distance: 78 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 36m |
| 40 mph (64.37 km/h) | 01h 12m |
| 50 mph (80.47 km/h) | 00h 58m |
| 60 mph (96.56 km/h) | 00h 48m |
| 70 mph (112.65 km/h) | 00h 41m |
| 80 mph (129 km/h) | 00h 36m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.46 | $7.63 | $15.27 |
| Mid-grade | $4.93 | $8.42 | $16.84 |
| Premium | $5.31 | $9.07 | $18.14 |
| Diesel | $6.55 | $11.20 | $22.40 |
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