I have come across a number of threads in this and other forums where posters state their average speed is such and such. My question is does average speed really tell us anything of importance about our riding ability. does this figure hide more than it reveals. I find myself getting hung up on my average speed. for instance i my speed can range from 5 mph to 25 mph depending on terrain.(excluding downhills) but don't seem to be getting any faster over a set distance but I can get up hills that i couldn't before I can ride longer and farther and not get as tired. so is there a better measure of cycling performance that you use. Mi myself Inow tend to monitor my heart rate as this seems to me to be a good indicator. Do you agree.