My route home will take me thru Billings, MT. I want to do a quick stop (photo op) at Mt. Rushmore, but I need to be in Billings by Tuesday evening the 17th. I'm thinking of route 14 across S. Dakota to Rapid City. If that is too slow there's always I-90.

If you are familiar with that route I would appreciate any recommendations.

If youÔÇÖre headed that way too and want a riding partner please let me know.

Thanks in advance.