Cavority, your testimony elsewhere on this forum of the somewhat amazing accuracy of the Tanda Calculator in your personal experience, in which you ran an ~2:45 (if I remember correctly), is powerful, for you have proven to be one of the more credible posters here. It counteracts anyone trying to diss it on Reddit when they have not even properly applied it.
I think garmin averages your heart rate, running speed, etc, and comes up with a general prediction. Like the other day it said I could run a 18:05 or whatever and then a week later 19:11....I don't trust the thing. Trust your gut and what you think you can run. So, I work on my feet for 12 hours a day and then run after work, so of course my performance is going to be affected along with my heart rate, it predicts I can run in the upper 18s, I think I can run 17:40-18:00. Don't let it be your defining times. At least for me I'm an outlier because I'm constantly tired after work, so on my days off when im well rested and killing runs, the race predictor drops.
One very significant finding of mine, which I have yet to see mentioned on this board, is that the Garmin Race Predictor and Garmin VO2max Prediction can quite easily be ‘fooled’ into inaccuracy; and if one is not aware of this issue, they may not realize how they are not purposely affecting Garmin’s predictions
Before I share this finding (if I actually do choose to share it here), I wish all to see what type of evil and downright stupid mentality inhabits this board. You see, in my previous posts above, I gave you good and accurate information, and yet, the posts were downvoted. That is evidence of what I’m referring to.
No you didn't. You are have really poor reading comprehension or you just don't get it. My faith in the letsrun masses has been restored.