Put the waves of nausea the day before and immediately prior to the race down to nerves. Arrive at the start of the race on an empty stomach and pray to whoever may be listening that a piece of banana will keep you right til Balmaha. Search for good bush cover for 10 miles and convince yourself that after a trip there you'll be fine. Repeat this at every (frequent) visit. Persuade yourself 20miles in at Balmaha that a fingernail piece of tattie and a slug of coke is plenty fuelling to get to Rowardenen 7 miles away. Ignore the fact that you've already puked and continue to put it all down to nerves.
Convince yourself as you approach Rowardenen that it's the jacket tied around your waist that's causing all the problems and plan to ditch it at the next checkpoint. At said checkpoint ignore the fact that everyone thinks you look like death and after enjoying a real toilet stop and ditching the jacket, soldier on having consumed 2 mini cheddars and a fruit pastill. Promptly hurl them back up once you get out of view, that way they won't haul your ass back and pull you out of the race.
Battle with yourself continually throughout the next section that as long as you can keep running, despite now puking every 2 minutes, you can still finish. Continue this train of thought when even running downhill becomes impossible and particularly when the walk becomes a shuffle. Arrive at Inversnaid and hope that once you open your drop bag everything will be fine. When it's not, inform the marshall that you're not a quitter but seriously ill and seeth too lifeless to knock his teeth out while he very loudly shouts to another marshall "we have a quitter".
Spend the next 2.5 hours debating your decision and contemplate withdrawing your withdrawal and carrying on to Bein Glas for purely logistical reasons before the sweeper arrives and it's no longer an option. Endure the car journey from hell to the finish, forcing the driver to stop every few miles for a puke break. Arrive at the finish a crumpled heap and watch in envy as everyone else celebrates.
Congratulations, you now know how NOT to run an ultra. To do it properly, you'll have to read someone else's blog.
these guys were creeping me out