I wish I could find the time to put in that sort of weekly mileage!!.
With work commitments I am struggling to put in 100 miles a week and that's including my 30 mile commute that I usually manage about at least one day a week out of the 4 I'm on duty for.
Looking to enter the Trossachs Ton this year ( Will be my first 100 miler ) so I really need to pull my finger out and put the training effort in :-
http://www.action.org.uk/get_involved/trossachs_ton
I think I need to hit up the Tacx Flow more often.