Sunday's run workout

I'm coming to the end of week 6 of my Endurance Nation OS plan and the Sunday run appears to be changing for the next 3 weeks.

Plan called for:

Run 0:45
WU: 15'easy, including 4x30" strides

MS: 2 x 200m at Z5/IP
3 x 400m at Z5/IP
3 x 200m at Z5/IP

WD: 5' easy

IP for me right now is 6:39. I didn't pace real well on the first several intervals and ended up in the mid 5's to upper 5's for the first 2 and then tried to dial in the pace for the 1/4 mile intervals and ended up 6:23, 6:33, and 6:37. Not a bad workout and I had no issues completing any of the intervals. I did take extra time stretching at the end of the workout as my left hamstring always gives me issues when I do speed work.