I'm doing the 36 week Ironman plan, and for the first couple of weeks, I often replaced a bike workout with a bike commute. My ride is about 45 minutes each way, even though it is only 8.5 miles. Now that I'm starting on week 8, I'm thinking of going back to using the commute to replace a workout. If I have a 1:10 bike workout scheduled, does a 1:30 total commute for the day make sense? I don't closely monitor my HR during a commute, but I certainly get a nice variety of resting/spinning/hard intervals during my commute.
Thoughts on this? I really need to split up my workouts, I have a hard time doing both workouts in one evening. I don't have a place to do AM swims during all but one of my swim days, so I would either have to get up early and ride the trainer before work, or use the commute as a workout.