Started at 26.8* for the distance (220m or so) and ending at 37.9 by round 8, walking back to the start every time. It was pretty brutal, but felt very productive. My legs feel ok today considering the beating they took, but my obliques, intercostals and abs are totally destroyed! Lesson learned, you want to work your minor abdominal muscles? Do sprints!
*note: I didn’t record the splits for my first two runs.