As a visitor and not a resident, fv1989 and SusieLou are absolutely right about driving west in CO. You don't need to go off road to see awesome scenery. As one who has planned and done a couple of road trips in CO, it is almost impossible to pick a non scenic route heading west. The hard part is deciding what route to take.
Lots of good replies already. Lots of folks like to go to Yankee Boy Basin to view wildflowers as it has that reputation on many internet posts. If this was the reason to go to Yankee Boy, the OP is advised that wildflowers will be long gone in Yankee Boy and other areas of the high country when she makes her trip.Edited: 8:49 am, August 16, 2018