Stayed in Rapid City. It is about a 30 minute ride to Sturgis. Visit Spearfish and Lead on the West side of Sturgis. If you have time head to the East of Rapid City. The National Parks Service operates a real missile silo. You can actually go down into the silo if you make reservations. Check out their website.
Also don't forget the obvious..Rushmore and Crazy Horse.
As for Sturgis...it is what it is. Huge crowds. There is a motorcycle museum there. It has multiple floors of displays and a reasonable fee.
We went the day after the rally was over. No drunks, fights, etc and plenty of half price T-Shirts.
Toughest part of the trip was the ride from B/CS to Amarillo in August. Well over 100 degrees. We stopped at almost every convenience store we saw to get a bottle of water.
BTW there is a great Honda Gold wing dealer in Rapid City. (Rice Honda).
*Of course if you are a riding a Harley, bring plenty of oil and large tool box.
: )
* a little motorcycle humor.
[This message has been edited by brazos county observer (edited 4/11/2013 7:38a).]