No doubt you will all be aware of the huge event taking place at the moment- The Grand Union Canal Race, a 145 mile footrace along the canal from Birmingham to London.
Next time someone tries to impress you with claims to be training for a marathon or some expensive but not particularly difficult desert run for accountants, just ask them if they have done GUCR and watch them shrivel up before your very eyes. This is the number one race for anyone serious about proving themselves in Ultrarunning (the crazy notion of running very long distances).
The race starts Saturday at 6 am and has a cutoff of 45 hours. If you happen to see any of the competitors (you'll recognise them because they will be on the canal towpath, have a number on their chest and quite possibly seem a bit the worse for wear) then cheer them on and tell them they look great.
You can get updates here: http://www.gucr.co.uk/doc_cat.asp?cat=1
or do the really modern thing and look on twitter https://twitter.com/search/%23GUCR