I started out at a ten minute mile effort and ratcheted the speed up every five minutes until I was down to a 8:27 pace at the end. That's a 6:15 age graded. I shut things down at 30 minutes. I was actually okay. Not struggling, just running sub tempo.
My right knee was a tiny bit sore when I started running today. It was sore on Tuesday and Thursday too but both times the soreness went away after a few minutes. Same today. It doesn't feel anything like when I tore the meniscus last year but it is "there" non-the-less so I am monitoring it.