I quit MTBing when I moved from Wales (where there are mountains) to the UK midlands (where there are no mountains) because I got fed up of riding through muddy fields. I also hate cleaning the muck off my bikes, so I became a roadie instead.I have ridden one 24 hour MTB event as one of a pair - we even came third in our category (singlespeed). It's bloody hard work - good luck with the racing.