Does anyone have a good VFR route to go from the Rapid City area to Jackson? It would seem there would be a route or two to get through the mountains following roads, etc but nothing seems immediately obvious. This would be for a Cessna 182 and/or Archer 180. Neither have onboard O2 so trying to find a route that would be around 10K or lower. We can bring a pulse oximeter to monitor 02 and use cans of 02 if needed for short amounts if time or to divert to land. Looking to fly that way in September.