Hi Chris I did it a few years back and am thinking about again for this year. I remember the weather being challenging on the first day and very muddy so all weather dependant as your on trails pretty much the whole way. The organisation and value for money is second to none so I'd definitely recommend it to anyone considering.
I've signed up for Bolton and currently have a carbon road bike. Was thinking about getting a time trail bike for the IM but can only really afford a second aluminium bike. I'm new to cycling so didn't know if the light weight carbon road bike would be slower than a heavier aluminium bike but with a more aerodynamic position? I've heard people talk about some rides being too technical for a TT bike but don't really know what that means.
I do know how quick the bike is depends how you quick you pedal!!
Would love to know more about the 6 day event Pam.
Real shame about the marathon going this year though, is that likely to be a permanent change back to the 6hr and 12 hr with no marathon? I've encouraged a few to give a track marathon a try but with many of my running friends doing Brighton, London or both then a 6hr run may prove too much for them at that stage of the year