My winter training has been the BikeJournal consecutive days of riding challenge. It requires at least a 10K ride daily, with the allowed substitution of up to 20 days on the indoor bike for 45 minutes. I have been able to meet the challenge daily since last April, now at 294 days and still riding. I have hit the indoor bike twice this week (a bad week as it turns out), but have managed 893 outdoor miles so far this year. The riding is slow, however, at an average speed for a year of under 12 mph.
This seems to take care of my training needs on the bike (along with the 400,000+ feet a year of altitude gain), but I do a few reps each night with 15# free weights just to keep my upper body from thinking I have forgotten about it completely.
