I was in hospital April 4-6, and I have just completed 490 miles between 16/04-02/05 an avg of 35 miles for each day ridden avg speed various, however my avg hr% of max has gone done from 85% to 76%, if you really want I can tell you how hard each ride was ft/mile cals used hence cals per/mile per hr ect, so I know from varies bits of data how one ride compares with another, and how i felt on each ride, as some rides you do well some you dont, tiredness comes into, then it becomes the ability to keep going which is also a sign of fitness, there are to many things in CYCLING that effect things, riding a stationary training proves nothing on the road.