For some reason the extreme circuit never kicked off, not sure what the reason was. there is an unofficial site
http://www.kingsofextremeenduro.com that has a ranking page
http://www.kingsofextremeenduro.com/koee-2013-ranking/
It will be interesting to see if Jarvis succeeds this time (sure it would have panned out differently if he was on an orange bike! Purely because it is their back yard they have tried everything to win the prologue, but stil have not managed to take it recently)