Originally Posted by
andy k
There really is no need at all to practise doing 24 hours or even 12.
All you need to do is go long enough and hard enough to hit a rotten patch (feeling sick and knackered).
Next you have to keep going until you come through it.
Once you know the feeling and that it passes, realise also that you may hit more than one rotten patch, then you are set.
In training these bad patches came for me at something over 5 hours.
Most I ever did in one day, or one weekend was about 8 hours, these came 10, 8 and 6 weeks before the big day.
Particluarly if you cannot get to the fells regularly, suddenly hitting yourself with 2 big big days in the fells will simply destroy you.
I think you need to get to the Lakes, familiarity with the task will give you confidence, which is the main thing you need. Training over the relevant terrain is also a massive benefit.