What is your HR when running?

HR is personal, like your shoe size. For example, my resting HR is low, around 55-60, but when I run, am still aerobic up to about 164, I can average 190s for a 20 min average if I am running a 5K with a max of about 206-207. It doesn't mean I am more or less fit, its just my ranges.

The key is once you know your HR zones you can test your fitness and progress...for instance I know I am getting more fit when I see my paces at a set HR zone, say the 164 beats per minutes, increase from a 9:00 min pace per mile to an 8 min pace per mile. - this shows I am still aerobic but running faster - and get to log more calories burned!

Edit to Add: those that use the whole subtract a number from your age will find that not to be your "actual" HR zone or zones...you have to actually do a HR test. Here is the protocol...

http://www.beginnertriathlete.com/cms/article-detail.asp?articleid=633