Halfway point between Rapid City Airport (RAP) and Wall

On the US-16A, SD-44 and SD-240 drive, the natural place to split the trip is Interior, SD. It is about 121 miles from Rapid City Airport (RAP), SD and 29 miles from Wall, SD.

Whole drive: About 150 miles, 3 h
To Interior: About 2 h from Rapid City Airport (RAP)
Highway: US-16A, SD-44 and SD-240

Total trip cost

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Why Interior

It sits right on US-16A, SD-44 and SD-240 near the middle of the drive, so neither day is much longer than the other, and it has plenty of hotels by the exits. Meeting someone coming the other way? It also works as a fair meetup spot.

Along the way

Mount Rushmore at the evening lighting
Iron Mountain Road pigtail bridges
Badlands Loop Road overlooks

More on this drive

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