Well, the road from the Bridal Veil falls onwards is blocked by a slip and requires a detour through a creek. However, the alternative, where you don't turn off left towards the Bridal Veil falls, but carry on towards Kawhia, has lots of gravel and a few loose sections at the moment. I would not take gravel newbies on road bikes through there, unless I wanted some entertainment and perhaps have them stop talking to me. Other than that, the road is a hoot and highly recommended.