I was worried about running the distance on my own too - my other runs of that distance have been marathons in large cities. But actually I have to say that I really enjoyed it. The pace was slow and there was no-one to compete against. Just me and an awful lot of trees. I was (almost) moved by the whole thing. There is time to think and to let the world go.
I ran 42 last weekend for the first time in this training (have completed 11 marathons up to last year) and will be running 42 again on Sunday. Then I have a week with low km followed by 2 weekends with 45 km before tapering.
I have been training the 5:1 run/walk ratio on my long runs and it took me a while to get used to the stop/go. The first time I tried it, my legs cramped so much I thought they were going to fall off. But practise has helped and on my 42km run last Sunday it went fine. I use the walk breaks to hydrate and have been practising eating musli bars then too.
I was surprised that even with my walk breaks I have an average pace of 6:30 per km, not fast by most people's standards I am sure but I was very pleasantly surprised.
T Rex, I have a DNF from a few years ago on an official 50km ultra that has been haunting me. I wanted to run this on my own to prove that I can. I originally said that I would only run one marathon and here I am 11 marathons later. Who knows - maybe the same will happen with ultras!
Wouldn't you advise too many very long runs? Does my plan seem too much?