Did it two years ago, on a hardtail, was a bit rough going but took my time, enjoyed the views (where visible), the route (several highlights) and most of all the company along the way – had a great laugh with the fellow riders.
Plenty of water available, stopped by burns for refills – added some hydration tablets as I went. Snack bars were all that was really required, jelly babies as extras.
Carried a lot of the stuff that’s meant to be carried, did weigh a fair bit though. Key seemed to be sustainable pace, went slightly slower than usual pace and was still in decent shape by the end.
KLL descent was fabulous, by the time we got there, towards the back of the field it has to be said, the path as devs says of roadies in disguise, so was able to get momentum up for the water bars, some brutal climbs but the descent after the hike-a-bike I found to be definitely doable on a HT and was a blast once you got the line and flow..