I rode the 18 mile mixed surface ride on Friday morning to beat the rain. I found the surfaces on the unpaved sections to be easily rideable on my road bike with 32mm slicks, but a couple of climbs, one just a couple miles from the start and another later on Bunn Mountain Road to be too steep for my legs and road gearing. Most I've walked a bike in a very long time. But the views were worth the work.