Re: Backroads to the Anniversary Run
Those definitely work - I spend quite bit of time along foxton, waterton and south platte chutes section of the south platte river and north fork of the south platte kayaking in the summer.
As an alternate suggestion, and to avoid the 285 section - you can use hwy 67 out of sedalia. It goes past RRR and eventually turns to dirt near Sprucewood. There is actually a junction at Sprucewood and going left will keep you on 67 and eventually merge with the south platte river road you mention above and then down to Deckers and so on. You can als go to the right at the Sprucewood fork and leave hwy 67 and get on Pine Creek Rd which will put you on the south platte river rd further north and near Twin Cedars.
Just more options for some who might be interested...
2010 Tacoma TRD