How far is Allentown, PA from Farmington, PA?
The driving distance from Allentown, PA to Farmington, PA is about 266.1 miles (428.2 km), with a travel time of about 05h 16m by car.
- The straight-line flight distance is about 222 miles (357.3 km).
- For a round trip, plan for roughly 10h 32m 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 16m.
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.
Census-designated place in Pennsylvania, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Allentown and Farmington.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Farmington.
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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
96.4 mi · 1 hr 56 min
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8
Take the exit slight right toward I 70 East, I 70 West: Hancock, Frederick
1239 ft · 30 sec
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9
Keep slight right to continue on I 70 West: Hancock, Cumberland
2310 ft · 57 sec
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10
Merge slight left onto Dwight D Eisenhower Highway
16.3 mi · 17 min · Dwight D Eisenhower Highway
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11
Continue on I 70, US 40 (Dwight D Eisenhower Highway)
3.1 mi · 3 min · I 70, US 40 (Dwight D Eisenhower Highway)
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12
Continue on Dwight D Eisenhower Highway
5 mi · 5 min · Dwight D Eisenhower Highway
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13
Keep slight left to continue on US 40, I 68: Cumberland
66.3 mi · 1 hr 14 min
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14
Take the exit slight right toward US 40 West: Uniontown
1.1 km · 1 min
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15
Merge slight left onto Garrett Highway
793 ft · 20 sec · Garrett Highway
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16
At the end of the road, turn left onto National Pike
20.1 mi · 27 min · National Pike
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17
Turn right
28 m · 7 sec
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18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Allentown and Farmington.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 81 South
Merge slight left
96.4 mi · 01h 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.
Rain Showers Likely leaving Allentown and Chance Rain Showers near Farmington.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Farmington?
The road trip is about 266.1 miles (428.2 km) and usually takes 05h 16m 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?
Marion is a useful midpoint, sitting about 132.8 miles from Allentown and 133.2 miles from Farmington.
How much longer is the road route than the straight-line distance?
The direct path is about 222 miles (357.3 km), while the road route adds roughly 44.1 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 6:28 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $38.37 one way or $76.74 round trip. Estimated CO2 is about 83.4 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Allentown and Chance Rain Showers near Farmington.
Stop Ideas Near Marion
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 Marion.
Hagerstown, MD
Hancock, MD
Martinsburg station
Frederick, MD
Flight Path Map
This map shows the direct air route between Allentown and Farmington. Straight-line distance: 222.03 mi (357.33 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Farmington
Census-designated place in southwestern Pennsylvania, USA
| Population | 1,197 |
| Coordinates | 39.8073000, -79.5656000 |
| Altitude | 561 |
| Country | United States |
End: Farmington (-79.5656, 39.8073)
Estimated Travel Time
Distance: 428 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 51m |
| 40 mph (64.37 km/h) | 06h 39m |
| 50 mph (80.47 km/h) | 05h 19m |
| 60 mph (96.56 km/h) | 04h 26m |
| 70 mph (112.65 km/h) | 03h 48m |
| 80 mph (129 km/h) | 03h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $38.37 | $76.74 |
| Mid-grade | $4.60 | $43.18 | $86.37 |
| Premium | $4.95 | $46.52 | $93.04 |
| Diesel | $5.98 | $56.15 | $112.30 |
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.