Please forgive me if this has been asked. I tried searching, but it didn't get me what I was after...

What kind of HRs do you women tend to average when you are either training for or racing in a time trial of, say, 10 miles?

I know it will vary...that each person's lactate threshold and fitness are different, etc, and everyone's a different age, etc. I'm just curious.

I just spent about 2 hours on a ride with an average HR of 154 (about 85% of max) and lots of longish stretches at about 164 (about 91% of max). I got in some intervals close to max on hills.

I found myself wondering what kind of HR I would be shooting for holding onto for, say 10 miles, if I attempted a beginner's time trial?