Distance between cities › USA › South Dakota › Harrison, SD › Distance from Harrison to Seneca Book Hotels

Distance from Harrison, SD to Seneca, PA

Distance

1,146 mi

Time

21 hours 5 mins

Gas Cost

$105 - $204

There are 968.62 miles from Harrison to Seneca in east direction and 1,146 miles (1,844.31 kilometers) by car, following the I-90 route.

Harrison and Seneca are 21 hours 5 mins far apart, if you drive non-stop .

This is the fastest route from Harrison, SD to Seneca, PA. The halfway point is Edgerton, WI.

Please note the time difference between Harrison, SD and Seneca, PA is 1 hour. The current time in Harrison is 11:38 pm (Mar 11) and the current time in Seneca is 12:38 am (Mar 12).

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Seneca, PA? Here there are some offers to rent a car in Harrison, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Harrison »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 46.01 gallons of gas to cover the route between Harrison, SD and Seneca, PA.

The estimated cost of gas to go from Harrison to Seneca is $147.40.

During the route, an average car will release 901.35 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Harrison, SD and Seneca, PA

If you want to meet halfway between Harrison, SD and Seneca, PA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.885994 and -89.056030, or 42º 53' 9.5784" N, 89º 3' 21.708" W. This location is 572.77 miles away from Harrison, SD and Seneca, PA and it would take approximately 10 hours 32 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Edgerton, WI, situated 564 miles from Harrison, SD and 583 miles from Seneca, PA. It would take 8 hours 16 mins to go from Harrison to Edgerton and 8 hours 56 mins to go from Seneca to Edgerton.

Major City Closest to Halfway Point

The major city closest to the halfway point between Harrison, SD and Seneca, PA is Madison, WI, situated 543 miles from Harrison, SD and 610 miles from Seneca, PA. It would take 8 hours 4 mins to go from Harrison to and 9 hours 21 mins to go from Seneca to Madison.