speedster on 4/19/2012 3:32:43 PM:
Not that likely. It's been an unusually dry spring, for starters, so the ground isn't overly saturated to begin with. I rode a section of the trail last weekend after a heavy rain Sat. evening, without any sort of problem.
Furthermore, there is a stoney base layer pretty much everywhere I've traversed along the trail route. Big washouts and puddles shouldn't be a factor.
Obviously, bring raingear to keep yourself dry if rain is a possibility. Other than that, get out there and enjoy it!