Distance between cities › USA › Montana › Forest Grove, MT › Distance from Forest Grove to Seneca Book Hotels

Distance from Forest Grove, MT to Seneca, SD

Distance

617 mi

Time

11 hours 33 mins

Gas Cost

$58 - $112

There are 477.62 miles from Forest Grove to Seneca in southeast direction and 617 miles (992.97 kilometers) by car, following the I-94 route.

Forest Grove and Seneca are 11 hours 33 mins far apart, if you drive non-stop .

This is the fastest route from Forest Grove, MT to Seneca, SD.

Please note the time difference between Forest Grove, MT and Seneca, SD is 1 hour. The current time in Forest Grove is 5:44 am and the current time in Seneca is 6:44 am.

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Lowest Price Rental Cars in Forest Grove, MT

Planning on renting a car to go from Forest Grove, MT to Seneca, SD? Here there are some offers to rent a car in Forest Grove, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Forest Grove »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 24.78 gallons of gas to cover the route between Forest Grove, MT and Seneca, SD.

The estimated cost of gas to go from Forest Grove to Seneca is $80.83.

During the route, an average car will release 485.49 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Forest Grove, MT and Seneca, SD

If you want to meet halfway between Forest Grove, MT and Seneca, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.94933 and -103.663483, or 46º 56' 57.588" N, 103º 39' 48.5388" W. This location is 308.51 miles away from Forest Grove, MT and Seneca, SD and it would take approximately 5 hours 46 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Medora, ND, situated 302 miles from Forest Grove, MT and 316 miles from Seneca, SD. It would take 5 hours 50 mins to go from Forest Grove to Medora and 5 hours 48 mins to go from Seneca to Medora.