I just completed the Coach Greg McMillan 10K run training plan with a race on Sunday. Bottom line is it worked, and I beat my 47:00 target. If you have a race coming up and aren't working with a real coach, then it's worth a try. I particularly liked the confidence chart which updated after each workout to show if I was on track to meet my race goal. That was nice compared to other run training programs I had followed before which didn't give specific guidance on race pacing.
If Garmin is reading this there are a few issues or opportunities for improvement.
- All of the workouts are structured by pace. This is fine if you're racing and training on flat courses but doesn't really work for hills. It would be nice if there was an option to switch the workout targets to heart rate (like with the daily suggested workout feature) or maybe running power in the future.
- Even the "Easy Run" workouts didn't feel easy to me. They usually felt like 4/10 on the Perceived Effort scale and my heart rate was mostly in Z3. I'm not sure whether that was intentional or some kind of calibration issue. The Load Focus screen on my watch constantly showed a "Low Aerobic Shortage". There were no Z1 active recovery workouts at all.
- Even though I had set the Perceived Effort on my watch after every workout, Garmin Connect still prompted me to select a separate difficulty level field on each one just for Garmin Coach. Why do I have to enter essentially the same data twice? Garmin Coach should be able to adapt plans based on the Perceived Effort field.
- The training plan was supposedly "adaptive". Perhaps so, but there was no indication of what it was adapting. I would have liked some explanation of how it programmed each future workout based on the results of previous workouts.
- After every workout, Garmin Coach gave me a Performance Rating of either "Good Job" or "Room to Grow" on the activity. What the heck does that even mean? I sometimes got "Room to Grow" even though I had hit the pace targets for all of the intervals. I would have appreciated some guidance on how to "grow".
- Why doesn't Garmin Connect automatically set the activity Event Type field? If I did a workout as part of a training plan, then obviously the Event Type should be "Training".
- I had to skip some of the workouts due to shin splints in my left leg. Probably because I hadn't been running as much prior to starting the plan and I should have ramped up the volume more gradually. It would be nice if the plan had an option to do some of the aerobic base building workouts as low-impact cross training on an elliptical machine or something.
Now today my watch Race Predictor screen still shows a 10k time of 51:20. But I guess that's a separate issue...