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Distance from Castle Shannon, PA to Monongahela, PA

Distance

19 mi

Time

35 minutes

Gas Cost

$2 - $4

Helpful Inaccurate

There are 12.27 miles from Castle Shannon to Monongahela in southeast direction and 19 miles (30.58 kilometers) by car, following the Brownsville Road route.

Castle Shannon and Monongahela are 35 minutes far apart, if you drive non-stop .

This is the fastest route from Castle Shannon, PA to Monongahela, PA. The halfway point is Gastonville, PA.

Castle Shannon, PA and Monongahela, PA are in the same time zone (EDT). Current time in both locations is 1:24 pm.

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Lowest Price Rental Cars in Castle Shannon, PA

Planning on renting a car to go from Castle Shannon, PA to Monongahela, PA? Here there are some offers to rent a car in Castle Shannon, PA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Castle Shannon »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.74 gallons of gas to cover the route between Castle Shannon, PA and Monongahela, PA.

The estimated cost of gas to go from Castle Shannon to Monongahela is $2.79.

During the route, an average car will release 14.57 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.76 per gallon of regular gas. Price last updated on March 18, 2026.
Read more about our CO₂ calculation.

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Halfway Point Between Castle Shannon, PA and Monongahela, PA

If you want to meet halfway between Castle Shannon, PA and Monongahela, PA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.267365 and -80.009087, or 40º 16' 2.514" N, 80º 0' 32.7132" W. This location is 9.26 miles away from Castle Shannon, PA and Monongahela, PA and it would take approximately 17 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Gastonville, PA, situated 10 miles from Castle Shannon, PA and 7 miles from Monongahela, PA. It would take 19 minutes to go from Castle Shannon to Gastonville and 14 minutes to go from Monongahela to Gastonville.