My limit is 10 miles with music if there is nothing good on TV. One night a week my best friend comes over and we ride trainers together watching TV. That is when it is least boring and the time flies. Sometimes we ride 12 miles.
My idea is to keep it consistant at least a few times a week. This has worked well for me during the years and once I hit the road I was in decent shape, not top shape, but at least I wasn't starting at the beginning again. I also use a treadmill this year for fitness walking and use it on the days that I don't use the trainer. Like the trainer, I walk to music if there is nothing on TV.
~ JoAnn
2012 Specialized Amira S-Works
2012 Vita Elite
2011 Specialized Dolce Elite (raffle prize) - Riva Road 155
Ralaigh Tara Mtn Bike