How far is Allentown, PA from Duncansville, PA?
The driving distance from Allentown, PA to Duncansville, PA is about 204.8 miles (329.6 km), with a travel time of about 04h 02m by car.
- The straight-line flight distance is about 155.2 miles (249.7 km).
- For a round trip, plan for roughly 08h 05m 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 02m.
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.
Unincorporated community in Cumberland County, Pennsylvania, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely then Partly Sunny
Driving Route Map
The map below follows the saved road route between Allentown and Duncansville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Duncansville.
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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
81.1 mi · 1 hr 29 min · Pennsylvania Turnpike
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14
Take the exit slight right toward Altoona, Johnstown
1614 ft · 47 sec
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15
Turn left onto Business 220
1440 ft · 42 sec · Business 220
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16
Take the ramp left toward I 99, US 220: Cumberland, Altoona
1124 ft · 27 sec
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17
Keep slight right to continue on I 99 North, US 220 North: Altoona
1502 ft · 37 sec
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18
Merge slight left
22.3 mi · 24 min
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19
Take the exit slight right toward PA 36, PA 164: Roaring Spring, Portage
2483 ft · 1 min
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20
Keep slight left
58 m · 7 sec
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21
Turn left onto Dunnings Highway
1874 ft · 44 sec · Dunnings Highway
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22
Continue on Old US Highway 220
1.3 mi · 2 min · Old US Highway 220
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23
Continue on Bedford Street
1726 ft · 31 sec · Bedford Street
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24
Continue on Dunnings Highway
1.7 mi · 2 min · Dunnings Highway
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25
Continue on Dummings Highway
622 ft · 13 sec · Dummings Highway
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26
Turn right onto 3rd Avenue
1904 ft · 53 sec · 3rd Avenue
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27
Arrive at your destination
0 m · 1 sec · 3rd Avenue
Car Route Details
A richer read on the saved driving route between Allentown and Duncansville.
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
81.1 mi · 01h 29m
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 then Partly Sunny near Duncansville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Duncansville?
The road trip is about 204.8 miles (329.6 km) and usually takes 04h 02m 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?
Plainfield is a useful midpoint, sitting about 102.3 miles from Allentown and 102.5 miles from Duncansville.
How much longer is the road route than the straight-line distance?
The direct path is about 155.2 miles (249.7 km), while the road route adds roughly 49.6 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 8:54 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.54 one way or $59.08 round trip. Estimated CO2 is about 64.3 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Allentown and Rain Showers Likely then Partly Sunny near Duncansville.
Stop Ideas Near Plainfield
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 Plainfield.
Harrisburg Transportation Center
Middletown
Lewistown
Elizabethtown station
Flight Path Map
This map shows the direct air route between Allentown and Duncansville. Straight-line distance: 155.14 mi (249.68 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Duncansville
Borough of Pennsylvania
| Population | 1,148 |
| Coordinates | 40.4234100, -78.4339000 |
| Altitude | 316 |
| Country | United States |
End: Duncansville (-78.4339, 40.42341)
Estimated Travel Time
Distance: 330 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 49m |
| 40 mph (64.37 km/h) | 05h 07m |
| 50 mph (80.47 km/h) | 04h 05m |
| 60 mph (96.56 km/h) | 03h 24m |
| 70 mph (112.65 km/h) | 02h 55m |
| 80 mph (129 km/h) | 02h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $29.54 | $59.08 |
| Mid-grade | $4.60 | $33.25 | $66.50 |
| Premium | $4.95 | $35.82 | $71.63 |
| Diesel | $5.98 | $43.24 | $86.47 |
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.