Notes
1 - 9:13 (hr = 128!)
2 - 9:03 (hr = 133)
3 - 8:51(hr = 135)
4 - 8:43 (hr = 139)
5 - 8:38 (hr = 142)
6 - 8:28 (hr = 146)
7 - 8:28 (hr = 147)
bathroom break
8 - 8:15 (hr = 143)
9 - 8:25 (hr = 148)
10 - 8:27 (hr = 150)
11 - 8:02 (hr = 153) did last quarter mile @ 6:30 pace (hence the 173 max hr)