30:00 rate change as follows: 
12:00 @ r22
9:00 @ r24
6:00 @ r26
3:00 @ r28

As written, start at 2k plus :16 (2:12.5) and drop split by :03 with every rate change. Mostly felt good although I did not hit my target splits. That last 5 minutes was ROUGH - I did everything I could to hang on to a decent split.