between a cold and travelling, I was off the bike (and no running either) for 3 weeks. I know I lost fitness, but it is hard to say how much. I estimate I was about 90% over the cold when I rode with the group on Tues and Thurs the week of Dec 13, so it was hard to say how much fitness I lost. As of Dec 30th I felt like I had regained the level I had before.