How far is Allentown, PA from Castle Shannon, PA?
The driving distance from Allentown, PA to Castle Shannon, PA is about 279.5 miles (449.8 km), with a travel time of about 05h 40m by car.
- The straight-line flight distance is about 238.7 miles (384.2 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.
Mostly Sunny
Slight Chance Rain Showers then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Allentown and Castle Shannon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Castle Shannon.
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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
43.1 mi · 52 min · William Penn Highway
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5
Continue on 78th Division Highway
7.6 mi · 9 min · 78th Division Highway
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6
Keep slight left to continue on I 81 South: Harrisburg
1.1 km · 49 sec
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7
Merge slight left
36.6 mi · 44 min
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8
Take the exit slight right toward US 11: New Kingstown, Middlesex
1419 ft · 49 sec
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9
Keep slight right to continue on US 11 South
61 m · 8 sec
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10
Merge slight left onto Harrisburg Pike
1.6 km · 2 min · Harrisburg Pike
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11
Take the exit straight toward I 76, PATP
2453 ft · 1 min
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12
Keep slight right to continue on I 76 West: Pittsburgh
1304 ft · 37 sec
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13
Merge slight left onto Pennsylvania Turnpike
159.6 mi · 2 hr 56 min · Pennsylvania Turnpike
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14
Take the exit slight right toward US 30: Irwin, McKeesport
3215 ft · 1 min
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15
Keep slight left to continue on US 30 West: Pittsburgh
1611 ft · 40 sec
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16
Merge slight left onto Lincoln Highway
3.3 mi · 6 min · Lincoln Highway
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17
Turn left onto Lincoln Way
6.2 mi · 11 min · Lincoln Way
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18
Turn left onto 5th Avenue
1.5 km · 2 min · 5th Avenue
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19
Turn straight onto Lysle Boulevard
1.1 mi · 2 min · Lysle Boulevard
-
20
Continue on Jerome Street Bridge
788 ft · 15 sec · Jerome Street Bridge
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21
Continue on West 5th Avenue
1 km · 60 sec · West 5th Avenue
-
22
Keep slight left to continue on West 5th Avenue
2851 ft · 1 min · West 5th Avenue
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23
Continue on Richland Avenue
2073 ft · 35 sec · Richland Avenue
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24
Continue on Pittsburgh McKeesport Boulevard
2553 ft · 47 sec · Pittsburgh McKeesport Boulevard
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25
Turn slight left onto Lebanon Church Road
3.8 mi · 6 min · Lebanon Church Road
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26
Take the ramp slight right toward PA 51 North: Pittsburgh
146 m · 13 sec
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27
Merge slight left onto Clairton Boulevard
2.3 mi · 5 min · Clairton Boulevard
-
28
Continue on Saw Mill Run Boulevard
1 mi · 2 min · Saw Mill Run Boulevard
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29
Take the exit straight toward PA 88: Library Road, Glenbury Street
1051 ft · 26 sec
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30
Turn left onto Library Road
1.9 mi · 4 min · Library Road
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31
Turn right
55 m · 13 sec
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32
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Allentown and Castle Shannon.
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.
Mostly Sunny leaving Allentown and Slight Chance Rain Showers then Chance Showers And Thunderstorms near Castle Shannon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Castle Shannon?
The road trip is about 279.5 miles (449.8 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 139.6 miles from Allentown and 140 miles from Castle Shannon.
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 40.8 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 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 $40.29 one way or $80.58 round trip. Estimated CO2 is about 87.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Allentown and Slight Chance Rain Showers then Chance Showers And Thunderstorms near Castle Shannon.
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 Castle Shannon. Straight-line distance: 238.72 mi (384.19 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Castle Shannon
Borough of Pennsylvania
| Population | 8,371 |
| Coordinates | 40.3647900, -80.0222800 |
| Altitude | 313 |
| Country | United States |
End: Castle Shannon (-80.02228, 40.36479)
Estimated Travel Time
Distance: 450 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 18m |
| 40 mph (64.37 km/h) | 06h 59m |
| 50 mph (80.47 km/h) | 05h 35m |
| 60 mph (96.56 km/h) | 04h 39m |
| 70 mph (112.65 km/h) | 03h 59m |
| 80 mph (129 km/h) | 03h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $40.29 | $80.58 |
| Mid-grade | $4.60 | $45.35 | $90.69 |
| Premium | $4.95 | $48.85 | $97.69 |
| Diesel | $5.98 | $58.96 | $117.93 |
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.