Notes
Goal pace - 3:00. The worse part was that all but the first and fifth were positive split (and the fifth I am not 100%, but I think it was even). The last one was 80.xx for the first 400, then got really uncomfortable (legs/lungs, back pain started later). Rest was 60 or slightly under for all except the last, I wasn't paying attention and took an extra 4.
I tried to slow down when I started too fast for the first three, but then decided to try and just maintain whatever pace. Got a little stomach cramping near the end, but the minute was enough to clear it up.
After dinner I feel pretty good again, back pain has receded mostly too... Will update this note if that changes.*
*Yep - 800s are no good.