Garmin Run Coach worse than useless

Not a question, but a rant.  Eight weeks ago I ran a half marathon using one of the 3 plans to successfully lower my finish time.  I’ve got another one coming up in three weeks, so I asked for another plan to reduce my time even further.  But apparently 11 weeks is not enough time for one of the human coach’s plans, so it offered a computer generated one.  The mid-week training has been fine, with a good variety of speed workouts.  However the weekend long runs have been completely insufficient.  As I said, I was already at the distance conditioning for a half.  It should have just kept me close to that level.  Instead, it’s actually been reducing my distance as the weeks go by.  And I will note, I have been hitting the goals each run.

My weekly “long runs”:

1 hour 24 minutes

1 hour 30 minutes 

45 minutes 

53 minutes 

42 minutes 

1 hour 16 minutes 

1 hour 3 minutes - this week

1 hour 3 minutes (scheduled)

These are all roughly 9:20 pace, so my longest run, way back in the second week, was about 10 miles.  I’m now 3 weeks from the race, in the “peaking” phase, and it’s telling me I should be doing around 7 miles for my long run.  Yesterday I finally threw up my hands, ignored the plan and ran for 90 minutes.  As I suspected, I was pretty gassed by the end.  Next week, my final long run before the taper, it’s again telling me to run 63 minutes.  I will again ignore it and try pushing it to an hour and 45 minutes in an attempt to get a last minute increase in my mileage.

This has been completely unacceptable.  At worst, I just needed to maintain my fitness to do this half.  Instead, this plan has me worse off than when I started.  Any “adaptation” it makes is to reduce the workouts, and there doesn’t seem to be any lower limit to keep it from detraining you out of a race.  Absolutely do not use the Garmin Run “Coach”.