Range of distances with 115k/+6800m being the big one. It's not had the publicity or big name sponsorship of the two mentioned in this thread but looks every bit as good, and means you might actually get to run some of it too (rather than the conga lines of Transvulcania).
I'm gonna see how the UTMB ballot goes and make a decision after that, looks like a great race though.
Cheers for the Etna link DE, I'll be sure to check that out too.
Your best option is bus to aylesbury and then another one to tring (or carry on to ivinghoe and walk up the road to the beacon, ~15 mins), or if you're short on time a taxi. The aylesbury bus is 280 I think, but takes about 80 mins, though I think they start pretty early so you should be able to make it.
I would treat this as a DNS rather than a DNF, draw a line under it and move on. You were obviously not recovered from your cold and given you were planning to flirt with the cut-offs anyway, the result was inevitable. Most people would have stayed in bed so that says something about your character, definitely not a fraud!
I think what Ben is getting at is you can't fudge your way round a 100 miler. Most people who can run a marathon could probably go on to finish a 50. Just slow down a bit, walk a bit and before you know it you've got 10 to go and can easily walk it in. When you double the distance this attitude isn't going to cut it, walking the last 50 isn't going to get the job done.
That said, it's still just running. It's easy to let yourself feel tired when the end is in sight, so if you've only done 50s and felt terrible towards the end, I would say a large part of that is because you know you're done rather than because you've gone 50 miles - aka it's back on the mental game. Every time I've ran past 50 I've felt fine at 50 because I know the job isn't done. Every time I've stopped at 50 (or 40, 30 etc) I've felt tired because I'd finished the planned distance. It's the same when you first transition to ultras.
The longer the race the longer you've got to listen to your head asking "why are you doing this?" "what's the point?" etc. So long as you're prepared to ignore rather than give in to these thoughts you should do well.