It's still learning you. Did you wear a HR strap? You need that to get VO2Max and that's how it works out the face predictor. If you didn't wear a strap then all bets are off.
How many times have you worn the watch and the HR strap and 'gone for it', ie got into Z4 of your heartrate? As I said the race predictor is based on VO2Max and yours isn't as high as it should be. This is either because you haven't used the watch enough for it to learn you, or something like your Max HR is too high. Check that.
Been using the 230 with a MIO Link for the past few months while training. I've also been using the Garmin HR training schedule. I have been watching my race prediction time change as I train and just wonder how accurate the times are. It gives me times I not sure I can make or even come close to.
Do some search of the 620 forum and you'll find a few threads on this. VO2Max maps directly to the times given, there is a table (and links to it are in the forum or try google). If you take 3 points off your VO2Max then the race prcitor is about right!
Do some search of the 620 forum and you'll find a few threads on this. VO2Max maps directly to the times given, there is a table (and links to it are in the forum or try google). If you take 3 points off your VO2Max then the race prcitor is about right!
