Originally Posted by surak

Cool. I only know of the series from a co-worker. My goal next year is to get fast enough to finish in the gold medal tier of Cascade's High Pass Challenge, so I was considering those rides. In the meantime, since November I've bought PowerTap P1 pedals and tried out TrainerRoad, Zwift, and The Sufferfest. They are all subscription services that provide guided workouts, making it easier to not have to figure out what to do, and support a variety of indoor trainers. While you didn't mention any interest in indoor training, there are at least two good reasons to consider it: it's time efficient and it's much easier to do specific structured training.