I also did the Marathon distance, started in the B batch and finished in 3h53min. I agree with most of the comments that the merge of 33km/66km was very frustrating especially when it got to the single track at the end - but the slow guys I passed also seemed frustrated to continuously make way for the faster marathon cyclists - and understandably so. There were at some point little children cycling on the single track which can also become dangerous to them. I think the route was great and well marked (but tough with all the rocks, sand and tufty's). Just the last 16km was a balls-up. I studied the elevation profile before the race and was really looking forward to the last 10kms because of the nice downhill and flat home sprint through the single tracks - but then the bottlenecks... . Hope the race organizers can fix this...