Watchless dawn easy run

This morning was up at 5:35 a.m. and out to the park with my girlfriend, the calves were a bit tight today so I decided to do only 8k today without a watch at an easy pace, started out easy and hit the turn around at 4k in the mirador park, felt good at the end, decided to do afte the run 4 x 100s strides around mile race pace which is uknown currently, my PR is 5.29, but I am not even close right now. Had aa while without doing something fast, so I thought I was going to feel slower but I did not, I felt a bit heavy for sure!! Felt loose at the end! Happy Saturday!! around 9k total.