How far is Castle Shannon, PA from Allentown, PA?
The driving distance from Castle Shannon, PA to Allentown, PA is about 283.3 miles (456 km), with a travel time of about 04h 51m by car.
- The straight-line flight distance is about 238.7 miles (384.2 km).
- For a round trip, plan for roughly 09h 42m 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 04h 51m.
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.
Chance Rain Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Castle Shannon and Allentown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Shannon and Allentown.
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1
Start on the route
55 m · 15 sec
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2
Turn left onto Library Road
1.9 mi · 4 min · Library Road
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3
Merge right onto Saw Mill Run Boulevard
1.2 mi · 2 min · Saw Mill Run Boulevard
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4
Continue on Clairton Boulevard
2.4 mi · 5 min · Clairton Boulevard
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5
Take the exit right toward McKeesport, West Mifflin
141 m · 13 sec
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6
Turn slight right onto Lebanon Church Road
2.9 mi · 5 min · Lebanon Church Road
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7
Keep slight right to continue on Lebanon Church Road
1 mi · 2 min · Lebanon Church Road
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8
Turn slight right onto Pittsburgh McKeesport Boulevard
2553 ft · 45 sec · Pittsburgh McKeesport Boulevard
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9
Continue on Richland Avenue
2095 ft · 35 sec · Richland Avenue
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10
Continue on W.D. Mansfield Memorial Bridge
1876 ft · 32 sec · W.D. Mansfield Memorial Bridge
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11
Keep slight left
2.1 mi · 4 min
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12
Continue on 5th Avenue
1.5 km · 2 min · 5th Avenue
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13
Turn right onto Lincoln Way
5.9 mi · 10 min · Lincoln Way
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14
Continue on Lincoln Way
1765 ft · 38 sec · Lincoln Way
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15
Turn slight right onto Lincoln Highway
3.3 mi · 6 min · Lincoln Highway
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16
Take the exit straight toward PATP, I 76
988 ft · 24 sec
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17
Continue on PATP, I 76
876 ft · 22 sec
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18
Keep slight right to continue on I 76 East: Harrisburg
1814 ft · 44 sec
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19
Merge slight left onto Pennsylvania Turnpike
159.5 mi · 2 hr 56 min · Pennsylvania Turnpike
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20
Take the exit slight right toward I 81, US 11: Carlisle, Harrisburg
1.4 km · 2 min
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21
Keep slight left to continue on US 11 North: Harrisburg
1712 ft · 55 sec
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22
Continue on Harrisburg Pike
1.1 mi · 2 min · Harrisburg Pike
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23
Take the exit straight toward I 81 North: Harrisburg
1358 ft · 34 sec
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24
Merge slight left
12.7 mi · 15 min
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25
Take the exit slight right toward US 11, US 15: Enola, Marysville
931 ft · 14 sec
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26
Keep slight left to continue on US 11 North, US 15 North: Marysville
1828 ft · 28 sec
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27
Keep slight left
2072 ft · 32 sec
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28
Merge slight left onto George N. Wade Memorial Bridge
1.2 km · 1 min · George N. Wade Memorial Bridge
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29
Continue on American Legion Memorial Highway
3.4 mi · 5 min · American Legion Memorial Highway
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30
Keep slight left to continue on American Legion Memorial Highway
19.1 mi · 23 min · American Legion Memorial Highway
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31
Take the exit slight right toward I 78 East: Allentown
1.1 km · 45 sec
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32
Continue on 78th Division Highway
7.6 mi · 9 min · 78th Division Highway
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33
Continue on William Penn Highway
42.8 mi · 51 min · William Penn Highway
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34
Keep slight right to continue on Lehigh Valley Thruway
1.5 km · 1 min · Lehigh Valley Thruway
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35
Take the exit slight right toward Cetronia
1053 ft · 27 sec
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36
Turn straight onto Tilghman Street
4.9 mi · 8 min · Tilghman Street
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37
Arrive at your destination
0 m · 1 sec · Tilghman Street
Car Route Details
A richer read on the saved driving route between Castle Shannon and Allentown.
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
160 mi · 02h 56m
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.
Chance Rain Showers leaving Castle Shannon and Chance Rain Showers near Allentown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castle Shannon to Allentown?
The road trip is about 283.3 miles (456 km) and usually takes 04h 51m 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 139.9 miles from Castle Shannon and 143.5 miles from Allentown.
How much longer is the road route than the straight-line distance?
The direct path is about 238.7 miles (384.2 km), while the road route adds roughly 44.6 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 7:18 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.86 one way or $81.72 round trip. Estimated CO2 is about 88.9 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Castle Shannon and Chance Rain Showers near Allentown.
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 Castle Shannon and Allentown. Straight-line distance: 238.72 mi (384.19 km).
#1 Castle Shannon
Borough of Pennsylvania
| Population | 8,371 |
| Coordinates | 40.3647900, -80.0222800 |
| Altitude | 313 |
| 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: 456 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 26m |
| 40 mph (64.37 km/h) | 07h 05m |
| 50 mph (80.47 km/h) | 05h 40m |
| 60 mph (96.56 km/h) | 04h 43m |
| 70 mph (112.65 km/h) | 04h 02m |
| 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 | $40.86 | $81.72 |
| Mid-grade | $4.60 | $45.99 | $91.98 |
| Premium | $4.95 | $49.54 | $99.08 |
| Diesel | $5.98 | $59.80 | $119.60 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.