I've been doing my base miles for a month and a half now, and I'm seeing good results. I've already lost 12 pounds (I had that much to give and more), my resting HR has been lowered a little from 67 to 62, and my average speed has increased from 14 mph to 16 mph as my fitness has improved. Plus, I'm staying out longer. Initially I was riding about twenty miles in 1.5 hours. If the weather holds through next week, I'm going to shoot for some forty mile rides toward the end of the week. I've only cut two rides short: one because I felt weak and the other because of traffic fleeing a Kentucky basketball game (I almost got belted twice).
While I'm in no hurry to move out of the base period, especially since I'm seeing needed results, I'm wondering how long I should continue riding base miles. When is the right time to move to the preparation period?