9/2

3 x 1 mile, 5 minute rest
Hard, but repeatable 

Ran at a park near my house because it had some shade. Part of the loop is loose gravel/dirt and part paved. It also has a weird uphill. A little over 3 times around is 1 mile.


Round 1: 7:33.4 (Average HR: 142 bpm)
Round 2: 7:31.3 (Average HR: 150 bpm)
Round 3: 7:44.0 (Average HR: 156 bpm)

Clearly the last one sucked.