Coming from I-90 Exit 57 Rapid City you can use these Directions. This will not take into account any road construction but is a pretty good guide. You can print this if you like.
NOTE: If you are using GPS (or any other mapping device or software), be sure to check directions off 385. We have found that these devices are not completely accurate and you will be sent out of the way. You can always call ahead to be sure you find us easily.