How far is Mars, PA from Upper Darby, PA?
The driving distance from Mars, PA to Upper Darby, PA is about 316.8 miles (509.8 km), with a travel time of about 05h 16m by car.
- The straight-line flight distance is about 255.1 miles (410.6 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.
Township in Franklin County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Widespread Frost then Sunny
Driving Route Map
The map below follows the saved road route between Mars and Upper Darby.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mars and Upper Darby.
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1
Start on Crowe Avenue
11 m · 3 sec · Crowe Avenue
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2
Turn slight left onto Irvine Street
1021 ft · 20 sec · Irvine Street
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3
Continue on Mars Valencia Road
1.7 mi · 3 min · Mars Valencia Road
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4
Continue on Babcock Boulevard
1.5 km · 2 min · Babcock Boulevard
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5
Turn sharp left onto Bakerstown Road
3.9 mi · 6 min · Bakerstown Road
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6
Take the ramp slight right toward PA 8 South
105 m · 9 sec
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7
Merge slight left onto William Flinn Highway
2946 ft · 60 sec · William Flinn Highway
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8
Continue on William Flinn Highway
2.2 mi · 4 min · William Flinn Highway
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9
Take the exit slight right toward I 76 Toll, PATP
1443 ft · 57 sec
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10
Keep slight left to continue on I 76 East: Pittsburgh
2055 ft · 50 sec
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11
Merge slight left onto Pennsylvania Turnpike
287.8 mi · 5 hr 13 min · Pennsylvania Turnpike
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12
Take the exit slight right toward I 76 East: Valley Forge, Philadelphia
5.1 mi · 8 min
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13
Take the exit slight right toward I 476 South: Chester
3093 ft · 2 min
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14
Merge slight left onto Mid-County Expressway
6.4 mi · 9 min · Mid-County Expressway
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15
Take the exit slight right toward PA 3: Upper Darby, Broomall
1670 ft · 59 sec
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16
Turn left onto West Chester Pike
2.5 mi · 5 min · West Chester Pike
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17
Turn slight right onto Darby Road
144 m · 14 sec · Darby Road
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18
Continue on Lansdowne Avenue
3 mi · 8 min · Lansdowne Avenue
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19
Turn right onto West Providence Road
1430 ft · 39 sec · West Providence Road
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20
Arrive at your destination
0 m · 1 sec · West Providence Road
Car Route Details
A richer read on the saved driving route between Mars 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
288 mi · 05h 13m
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.
Widespread Frost then Sunny leaving Mars and Sunny near Upper Darby.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mars to Upper Darby?
The road trip is about 316.8 miles (509.8 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?
Metal is a useful midpoint, sitting about 158 miles from Mars and 158.8 miles from Upper Darby.
How much longer is the road route than the straight-line distance?
The direct path is about 255.1 miles (410.6 km), while the road route adds roughly 61.7 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 $45.68 one way or $91.36 round trip. Estimated CO2 is about 99.4 kg one way.
What should you check before leaving?
Before you leave, expect Widespread Frost then Sunny around Mars and Sunny near Upper Darby.
Stop Ideas Near Metal
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 Metal.
Hancock, MD
Hagerstown, MD
Huntingdon
Martinsburg station
Flight Path Map
This map shows the direct air route between Mars and Upper Darby. Straight-line distance: 255.15 mi (410.63 km).
#1 Mars
Borough in Butler County, Pennsylvania, USA
| Population | 1,608 |
| Coordinates | 40.6959000, -80.0117300 |
| Altitude | 317 |
| 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: 510 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 33m |
| 40 mph (64.37 km/h) | 07h 55m |
| 50 mph (80.47 km/h) | 06h 20m |
| 60 mph (96.56 km/h) | 05h 16m |
| 70 mph (112.65 km/h) | 04h 31m |
| 80 mph (129 km/h) | 03h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $45.68 | $91.36 |
| Mid-grade | $4.60 | $51.42 | $102.83 |
| Premium | $4.95 | $55.39 | $110.77 |
| Diesel | $5.98 | $66.86 | $133.71 |
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 · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.