How far is Slippery Rock, PA from Upper Darby, PA?
The driving distance from Slippery Rock, PA to Upper Darby, PA is about 349 miles (561.6 km), with a travel time of about 05h 38m by car.
- The straight-line flight distance is about 263.2 miles (423.6 km).
- For a round trip, plan for roughly 11h 17m 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 38m.
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.
Borough of Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Mostly Clear
Driving Route Map
The map below follows the saved road route between Slippery Rock and Upper Darby.
Turn-by-Turn Driving Directions
Step-by-step road directions between Slippery Rock and Upper Darby.
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1
Start on South Main Street
13 m · 9 sec · South Main Street
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2
Turn left onto New Castle Street
1.1 km · 1 min · New Castle Street
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3
Continue on New Castle Road
3.5 mi · 5 min · New Castle Road
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4
Take the ramp right
821 ft · 20 sec
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5
Merge slight left
25.6 mi · 28 min
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6
Take the exit slight right toward Cranberry, Pennsylvania Turnpike
2944 ft · 1 min
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7
Keep slight left to continue on Youngstown Ohio, Harrisburg
1.2 km · 2 min
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8
Keep slight right to continue on I 76, PATP: Youngstown Ohio, Harrisburg
2328 ft · 57 sec
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9
Keep slight left to continue on I 76 East: Harrisburg
1861 ft · 1 min
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10
Merge slight left onto Pennsylvania Turnpike
298.7 mi · 5 hr 25 min · Pennsylvania Turnpike
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11
Take the exit slight right toward I 76 East: Valley Forge, Philadelphia
5.1 mi · 8 min
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12
Take the exit slight right toward I 476 South: Chester
3093 ft · 2 min
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13
Merge slight left onto Mid-County Expressway
6.4 mi · 9 min · Mid-County Expressway
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14
Take the exit slight right toward PA 3: Upper Darby, Broomall
1670 ft · 59 sec
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15
Turn left onto West Chester Pike
2.5 mi · 5 min · West Chester Pike
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16
Turn slight right onto Darby Road
144 m · 14 sec · Darby Road
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17
Continue on Lansdowne Avenue
3 mi · 8 min · Lansdowne Avenue
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18
Turn right onto West Providence Road
1430 ft · 39 sec · West Providence Road
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19
Arrive at your destination
0 m · 1 sec · West Providence Road
Car Route Details
A richer read on the saved driving route between Slippery Rock and Upper Darby.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Pennsylvania Turnpike
Merge slight left onto Pennsylvania Turnpike
299 mi · 05h 25m
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.
Sunny leaving Slippery Rock and Mostly Clear near Upper Darby.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Slippery Rock to Upper Darby?
The road trip is about 349 miles (561.6 km) and usually takes 05h 38m 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?
Valley-Hi is a useful midpoint, sitting about 174.3 miles from Slippery Rock and 174.7 miles from Upper Darby.
How much longer is the road route than the straight-line distance?
The direct path is about 263.2 miles (423.6 km), while the road route adds roughly 85.8 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 5:42 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $50.30 one way or $100.60 round trip. Estimated CO2 is about 109.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Slippery Rock and Mostly Clear near Upper Darby.
Stop Ideas Near Valley-Hi
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 Valley-Hi.
Hancock, MD
Huntingdon
Altoona Transportation Center
Hagerstown, MD
Flight Path Map
This map shows the direct air route between Slippery Rock and Upper Darby. Straight-line distance: 263.21 mi (423.6 km).
#1 Slippery Rock
Borough in Butler County, Pennsylvania, United States
| Population | 3,508 |
| Coordinates | 41.0639500, -80.0564500 |
| Altitude | 397 |
| Country | United States |
#2 Upper Darby
Town in Delaware County, Pennsylvania, United States
| Population | 82,883 |
| Coordinates | 39.9284500, -75.2738000 |
| Altitude | 20 |
| Country | United States |
End: West Providence Road (-75.273806, 39.928457)
Estimated Travel Time
Distance: 562 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 37m |
| 40 mph (64.37 km/h) | 08h 43m |
| 50 mph (80.47 km/h) | 06h 58m |
| 60 mph (96.56 km/h) | 05h 48m |
| 70 mph (112.65 km/h) | 04h 59m |
| 80 mph (129 km/h) | 04h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $50.30 | $100.60 |
| Mid-grade | $4.60 | $56.61 | $113.23 |
| Premium | $4.95 | $60.98 | $121.97 |
| Diesel | $5.98 | $73.61 | $147.23 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.