Running

Right, I'm extremely ignorant of these things, so someone please correct this (with reference to the run linked below):

HR average is 166 bpm, but first half it's below that and second half of the run its 170+.

It seems to me that I'm like an engine running out of revs- I need to either raise my rev limit, or produce the same power at lower revs, if that makes sense?

Today I think I could have gone faster for longer if my heart rate had stayed at the halfway rate rather than climbing.

http://connect.garmin.com/activity/90103577

Neil

What are you basing your target hr(I presume you have one as you seem disappointed by your hr)?

Hr is extremely personal and focusing on an hr based on others or even you doing another sport isn't a good guide of performance or fitness, I've just had a look a the data from one o my half marathons where I set a PB earlier this yea and average hr was close to 180 I was able to keep this up for the thug without goig anaerobic and then managed to get up to 196 at the end I'm my ahem sprint finish.