I did this out and back section on 6/23/2017. Total distance was 30.2 miles and total elapsed time was 11 hours 38 minutes. Start time 7:07 am. Finish time 6:45 pm. This time includes time spent at the Doyle Hotel eating a burger and drinking a beer. I can't offer any verification, but do you really think I would falsify such a slow time?
out & back