lots of good info on hup's thread:<br><br><a href="http://www.kickrunners.com/forum/showthread.php?t=17924&highlight=heart+rate+maximum" target="_blank">http://www.kickrunners.com/forum/sho...t+rate+maximum</a><br><br>
i'd go for your average hr during a 10k and then divide by .9
i'd go for your average hr during a 10k and then divide by .9