Is there a direct train?

No, there is no passenger rail service between Harrisburg and Allentown.

How long does the bus take?

The bus journey typically takes about 2.5 hours including transfers.

It is a major interstate, but requires caution due to heavy truck volume.

Are there tolls on I-78?

No, I-78 is a toll-free interstate highway.

What is the best way to travel?

Driving is the most convenient and fastest way to reach Allentown.

Harrisburg

Allentown

Bus Driving

Harrisburg to Allentown

Updated: 31 May 2026

The route from Harrisburg to Allentown spans approximately 85 miles, primarily utilizing Interstate 78 East. This drive takes you through the heart of the Pennsylvania Dutch country and into the Lehigh Valley. You will pass through Lebanon and Berks counties before reaching the industrial landscape of Allentown. Traffic can be heavy near the interchange with the Northeast Extension of the PA Turnpike. The journey is straightforward and well-marked with highway signage.

Total Distance: 135 km driving distance; 120 km straight-line air distance.

Fastest Way

Driving via I-78 East is the fastest method, taking roughly 90 minutes.

Cheapest Way

Driving is the most economical option if you are traveling with more than one person.

Compare Harrisburg to Allentown Routes

	Bus Connecting	Driving Direct
Duration	2 hours 30 minutes	1 hour 30 minutes
Avg Price	$30-$50	$15-$20 in fuel
Operator	Greyhound	Personal Vehicle
Route	Harrisburg Bus Terminal to Allentown Bus Terminal	I-81 North to I-78 East
Tip	Book tickets online in advance to secure lower fares.	I-78 is heavily used by freight trucks; maintain a safe following distance.

Travel Tips

Truck Traffic
Expect heavy tractor-trailer traffic on I-78 throughout the day.
Tolls
Be aware that some connecting routes may involve PA Turnpike tolls.
Rest Stops
Several service plazas are available along the route for fuel and food.
Navigation
Use GPS to navigate the complex interchanges near the Lehigh Valley.
Arrival
Allentown's downtown area is undergoing revitalization; check for event-related road closures.

Safety Tips

Lane Discipline
Stay in the right lane if you are not passing, as I-78 is a high-speed corridor.
Weather Alerts
Mountainous sections of I-78 can experience sudden fog or ice.
Vehicle Check
Ensure your tires are properly inflated for the high-speed highway driving.
Emergency Services
State police patrols are frequent on this stretch of interstate.