How far is Bethlehem, PA from Darby, PA?
The estimated driving distance from Bethlehem, PA to Darby, PA is about 66.5 miles (107 km), with a travel time of about 01h 22m by car.
- This page is using an estimated road distance while the full route geometry is refreshed.
- The straight-line flight distance is about 49.2 miles (79.2 km).
- For a round trip, plan for roughly 02h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 22m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 of Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
Road route is being refreshed. This page currently uses an estimated driving distance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bethlehem and Darby.
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Bethlehem and Sunny near Darby.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Bethlehem to Darby?
The road trip is about 66.5 miles (107 km) and usually takes 01h 22m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Hatfield is a useful midpoint, sitting about 24.6 miles from Bethlehem and 41.8 miles from Darby.
How much longer is the road route than the straight-line distance?
The direct path is about 49.2 miles (79.2 km), while the road route adds roughly 17.3 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 3:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.60 one way or $19.20 round trip. Estimated CO2 is about 20.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Bethlehem and Sunny near Darby.
Stop Ideas Near Hatfield
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 Hatfield.
Ardmore
Paoli
North Philadelphia station
30th Street Station
Flight Path Map
This map shows the direct air route between Bethlehem and Darby. Straight-line distance: 49.23 mi (79.23 km).
#1 Bethlehem
The second most populous city in Northampton County, Pennsylvania.
| Population | 74,892 |
| Coordinates | 40.6259300, -75.3704600 |
| Altitude | 109 |
| Country | United States |
#2 Darby
Borough in Delaware County, Pennsylvania, United States
| Population | 10,704 |
| Coordinates | 39.9184500, -75.2590700 |
| Altitude | 15 |
| Country | United States |
End: Darby (-75.25907, 39.91845)
Estimated Travel Time
Distance: 107 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 12m |
| 40 mph (64.37 km/h) | 01h 39m |
| 50 mph (80.47 km/h) | 01h 19m |
| 60 mph (96.56 km/h) | 01h 06m |
| 70 mph (112.65 km/h) | 00h 56m |
| 80 mph (129 km/h) | 00h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $9.60 | $19.20 |
| Mid-grade | $4.60 | $10.81 | $21.62 |
| Premium | $4.95 | $11.64 | $23.28 |
| Diesel | $5.98 | $14.05 | $28.11 |
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 11, 2026