12 miles with 2300ft of gain between 8200-9200ft altitude in 1:26:20. Average pace 7:11/ avg HR 158. Killed it. I added on 2 miles to my regular 10 mile route and I'm confident had I just run my 10 mile route I would have gone sub 7 pace for this which puts me close to one of my best times EVER. Average HR of just 158 puts me firmly at aerobic threshold or a Zone 3 effort... not that hard. I tried to stay completely in control and never feel like I needed to back off... just steady and strong. Taking in to account that I'm just back from a 10 week run hiatus I would call this one of my strongest runs of the entire year... if not then THE strongest.