Quote Originally Posted by li10up
This seems very unusual...are you sure there wasn't some sort of electrical interference? Overhead power lines can make your HR monitor put out some false readings. Also, other people's HR monitors can interfere with your readings if you get close enough to them.

It's not that unusual - some of us are bunny rabbits, and among the women that I know who race, as a group we seem to have a tendancy to be in the high max range. My max is 211 (I'm 34). Now if I see 230 or something ridiculous like that I can be pretty sure its powerline/electric fence etc. interference.