Try Acme event 300 Green and Yellow fields - start at midnight Friday night and then rides through into the next day. Good training for day/night/day as usually you've had a big day at work first! I will certainly be checking out of hotel as late (noon) then mooching as much as possible through the afternoon. Realistically won't be sleeping a lot night before anyway as I will be too wound up thinking 'WTF am I doing this for again?'