How far is Belfast, PA from Allentown, PA?
The driving distance from Belfast, PA to Allentown, PA is about 20.9 miles (33.6 km), with a travel time of about 00h 25m by car.
- The straight-line flight distance is about 16.3 miles (26.2 km).
- For a round trip, plan for roughly 00h 51m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 25m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 in Pennsylvania, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Belfast and Allentown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Belfast and Allentown.
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1
Start on Sullivan Trail
25 m · 7 sec · Sullivan Trail
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2
Turn sharp right onto Belfast Road
557 ft · 16 sec · Belfast Road
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3
Turn slight left onto Henry Road
1312 ft · 41 sec · Henry Road
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4
Take the ramp left
954 ft · 23 sec
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5
Merge slight left onto PA-33
6.6 mi · 8 min · PA-33
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6
Take the exit slight right toward US 22 West: Bethlehem, Allentown
1 km · 1 min
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7
Merge slight left onto Lehigh Valley Thruway
10.5 mi · 14 min · Lehigh Valley Thruway
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8
Take the exit slight right toward PA 145
981 ft · 35 sec
-
9
Keep slight left to continue on PA 145 South
54 m · 8 sec
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10
Turn left onto MacArthur Road
534 ft · 17 sec · MacArthur Road
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11
Continue on MacArthur Road
1.1 km · 1 min · MacArthur Road
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12
Continue on North 7th Street
2066 ft · 43 sec · North 7th Street
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13
Turn right onto Tilghman Street
1.2 km · 1 min · Tilghman Street
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14
Arrive at your destination
0 m · 1 sec · Tilghman Street
Car Route Details
A richer read on the saved driving route between Belfast 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.
Lehigh Valley Thruway
Merge slight left onto Lehigh Valley Thruway
10.5 mi · 00h 14m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Rain Showers leaving Belfast and Rain Showers Likely near Allentown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Belfast to Allentown?
The road trip is about 20.9 miles (33.6 km) and usually takes 00h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Freemansburg is a useful midpoint, sitting about 10.3 miles from Belfast and 10.6 miles from Allentown.
How much longer is the road route than the straight-line distance?
The direct path is about 16.3 miles (26.2 km), while the road route adds roughly 4.6 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:38 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.02 one way or $6.05 round trip. Estimated CO2 is about 6.6 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Belfast and Rain Showers Likely near Allentown.
Stop Ideas Near Freemansburg
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 Freemansburg.
White Haven, PA
Paoli
Trenton Transit Center
Ardmore
Flight Path Map
This map shows the direct air route between Belfast and Allentown. Straight-line distance: 16.29 mi (26.21 km).
#1 Belfast
Census-designated place in Pennsylvania, United States of America
| Population | 1,422 |
| Coordinates | 40.7806500, -75.2779600 |
| Altitude | 160 |
| 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: 34 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 41m |
| 40 mph (64.37 km/h) | 00h 31m |
| 50 mph (80.47 km/h) | 00h 25m |
| 60 mph (96.56 km/h) | 00h 20m |
| 70 mph (112.65 km/h) | 00h 17m |
| 80 mph (129 km/h) | 00h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $3.02 | $6.05 |
| Mid-grade | $4.60 | $3.40 | $6.81 |
| Premium | $4.95 | $3.67 | $7.33 |
| Diesel | $5.98 | $4.43 | $8.85 |
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.