Billings, MT to Mt Rushmore route

[Crdodd]

Greetings,
I am headed from Billings to Mt Rushmore , and plan to take I90 into Rapid City. From there, it looks like there are 2 parallel roads that head to Rushmore (specifically the KOA outside). Is there a preferred road to get there, or are they both suitable for towing?
Thanks

[decoy1]

Tom/Barb is correct.

[Tom_Barb]

Save your self about 4 hours driving by turning east at Crow Agency and take 212 across to Spearfish.

[1492]

Moved from Forum Technical Support

[pappcam]

Crdodd wrote:
Greetings,
I am headed from Billings to Mt Rushmore , and plan to take I90 into Rapid City. From there, it looks like there are 2 parallel roads that head to Rushmore (specifically the KOA outside). Is there a preferred road to get there, or are they both suitable for towing?
Thanks

Take 16 from Rapid City through Hill City if you're going to the Mt. Rushmore KOA.