How far is Upper Darby, PA from Saint Thomas, PA?
The driving distance from Upper Darby, PA to Saint Thomas, PA is about 162.6 miles (261.7 km), with a travel time of about 03h 23m by car.
- The straight-line flight distance is about 133.7 miles (215.2 km).
- For a round trip, plan for roughly 06h 46m 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 03h 23m.
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.
Unincorporated community in Lebanon County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Upper Darby and Saint Thomas.
Turn-by-Turn Driving Directions
Step-by-step road directions between Upper Darby and Saint Thomas.
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1
Start on West Providence Road
1430 ft · 46 sec · West Providence Road
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2
Turn left onto South Lansdowne Avenue
3 mi · 8 min · South Lansdowne Avenue
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3
Continue on Darby Road
144 m · 14 sec · Darby Road
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4
Turn slight left onto West Chester Pike
2.2 mi · 5 min · West Chester Pike
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5
Take the exit slight right toward I 476 North: Plymouth Meeting
2005 ft · 58 sec
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6
Merge slight left onto Mid-County Expressway
7 mi · 10 min · Mid-County Expressway
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7
Take the exit slight right toward I 76 West: Valley Forge
2184 ft · 53 sec
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8
Merge slight left onto Schuylkill Expressway
3.7 mi · 5 min · Schuylkill Expressway
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9
Take the exit slight right toward US 202, US 422 West: King of Prussia, West Chester, Pottstown
632 ft · 10 sec
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10
Keep slight left to continue on US 202 South, US 422 West: Mall Boulevard, West Chester, Pottstown, Swedesford Road
1447 ft · 22 sec
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11
Keep slight left to continue on Mall Boulevard
1331 ft · 21 sec
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12
Keep slight left to continue on I 76 West: New Jersey, Harrisburg
533 ft · 8 sec
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13
Merge slight left onto Schuylkill Expressway
2317 ft · 53 sec · Schuylkill Expressway
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14
Keep slight left to continue on I 76 West: Harrisburg
1919 ft · 1 min
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15
Merge slight left onto Pennsylvania Turnpike
99.8 mi · 1 hr 47 min · Pennsylvania Turnpike
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16
Take the exit slight right toward I 81, US 11: Carlisle, Chambersburg
2805 ft · 1 min
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17
Keep slight right to continue on US 11 South: Carlisle
157 m · 17 sec
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18
Turn straight onto Harrisburg Pike
1.9 mi · 4 min · Harrisburg Pike
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19
Continue on North Hanover Street
1.2 km · 2 min · North Hanover Street
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20
Turn right onto West North Street
1331 ft · 42 sec · West North Street
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21
Turn left onto North West Street
1.1 km · 2 min · North West Street
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22
Turn slight right onto Walnut Bottom Road
1.3 km · 1 min · Walnut Bottom Road
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23
Take the ramp slight right
1183 ft · 29 sec
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24
Merge slight left
29.7 mi · 35 min
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25
Take the exit slight right toward Lincoln Way
743 ft · 18 sec
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26
Turn right onto Lincoln Way East
1.5 mi · 3 min · Lincoln Way East
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27
Keep slight right to continue on Lincoln Way East
7.4 mi · 13 min · Lincoln Way East
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28
Turn right onto Schoolhouse Road
6 m · 1 sec · Schoolhouse Road
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29
Arrive at your destination
0 m · 1 sec · Schoolhouse Road
Car Route Details
A richer read on the saved driving route between Upper Darby and Saint Thomas.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Pennsylvania Turnpike
Merge slight left onto Pennsylvania Turnpike
99.8 mi · 01h 47m
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.
Mostly Sunny leaving Upper Darby and Mostly Sunny then Chance Rain Showers near Saint Thomas.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Upper Darby to Saint Thomas?
The road trip is about 162.6 miles (261.7 km) and usually takes 03h 23m 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?
Colebrook is a useful midpoint, sitting about 81.2 miles from Upper Darby and 81.5 miles from Saint Thomas.
How much longer is the road route than the straight-line distance?
The direct path is about 133.7 miles (215.2 km), while the road route adds roughly 28.9 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 10:14 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.45 one way or $46.91 round trip. Estimated CO2 is about 51 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Upper Darby and Mostly Sunny then Chance Rain Showers near Saint Thomas.
Stop Ideas Near Colebrook
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 Colebrook.
Elizabethtown station
Mount Joy
Middletown
Lancaster station
Flight Path Map
This map shows the direct air route between Upper Darby and Saint Thomas. Straight-line distance: 133.74 mi (215.23 km).
#1 Upper Darby
Town in Delaware County, Pennsylvania, United States
| Population | 82,883 |
| Coordinates | 39.9284500, -75.2738000 |
| Altitude | 20 |
| Country | United States |
#2 Saint Thomas
Township in Franklin County, Pennsylvania
| Population | 6,039 |
| Coordinates | 39.9175900, -77.7977700 |
| Altitude | 197 |
| Country | United States |
End: Saint Thomas (-77.79777, 39.91759)
Estimated Travel Time
Distance: 262 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 25m |
| 40 mph (64.37 km/h) | 04h 03m |
| 50 mph (80.47 km/h) | 03h 15m |
| 60 mph (96.56 km/h) | 02h 42m |
| 70 mph (112.65 km/h) | 02h 19m |
| 80 mph (129 km/h) | 02h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $23.45 | $46.91 |
| Mid-grade | $4.60 | $26.40 | $52.80 |
| Premium | $4.95 | $28.44 | $56.87 |
| Diesel | $5.98 | $34.33 | $68.65 |
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.