East Portal of the Moffat Tunnel.
am) 16 miles. I ran an out and back starting at 8400ft and turning around at 9200ft altitude (above is a pic of my turnaround point). 2700+ ft of total climbing with an average pace of 7:04 per mile and average HR of 148. On the return 8 miles (downhill) I ran a heartlek (that's my version of a fartlek by heart rate). I would start at HR 145 and push to HR 165 then ease up and jog back to HR 145. I was consistently hitting 5:30 pace on each push for roughly 1:00-2:00 before HR elevated. The recoveries took a bit longer to get HR back down but I was able to hold ~6:30-6:40 pace and still get HR to 145.
I was also happy with the climb out. Holding 7:20--7:30 pace for much of it with a max HR of 150.
For the locals... I ran from Rollinsville up to East Portal Moffat Tunnel.
Below is my data.
Note: I weighed 138 pounds this morning after drinking 1 liter of water then peeing clear. This makes me nervous but my training logs don't show any problems. Crazy to think that I raced my best Ironman weighing 155-160 pounds. I'm 20 pounds lighter.