Originally Posted by Dan333SP

I definitely see a temperature correlation, if it's above 90 my average HR will be 10-15 BPM higher than if it were in the 60s for the same effort, but I don't think it changes my max HR?

I really don't know what my max is anyway, I've seen up to 186 in really hard races but if I'm riding solo I really have to kill myself on a sustained climb to even reach 180. A friend that is a couple years older will average 190 for a fast crit, and have a peak over 200. I guess everyone is different.