am) This was at 5400ft altitude on an accurately measured trail. There was approximately 2" of snow and (what felt like) sub zero wind chill..
2 mile warm-up.
5 miles in 34:01 at average HR of 147. 6:48 average mile pace.
I used a HR range based on a conservative estimate of my LT (I ran at 25-30 beats below LT).
I finished with 1 mile easy with strides.
I'm very stoked about this test. The conditions were far from ideal. Considering I am coming off a 1 month rest break... this is good.