50% run, 5 steps into it my calves were burning. Made it a mile before I had to stop because they were so painfully tight. Stretched them for a bit, then continued. After a bit my hamstring tightened up. Still continued hoping it would be okay, but turned a little while later because I did not want to injure my hamstring again. Feel bad about how little I ran but I know that if I had gone to 8 like I planned it would have been bad news for my hammy. On the bright side it's been doing really well up until now, hopefully it feels good tomorrow.