Run - Treadmill (Treadmill) 20:42 [3] 4.0 km (5:11 / km)
6:10am - ran mostly a flat 5min/km easy - ended w/ a 1min 15% hill @ 6min/km then right into a 90 sec downhill sprint (-5%, 3.1min/km), then cool off until HR back to 110. HRmax = 143 on hill, 155 on sprint, mostly 128-130 for easy portion of run.