"I have been told that the NYC Half course is difficult, and a record may not be possible, so I will focus on being the first across the finish line in Central Park.” - Article on the home page
I just don't buy it. I would bet my life's savings that Kiplimo is on WR pace through at least 5k, maybe 10k. The half is his event. He ran the most insane positive split to break a WR that I've ever seen. He split 26:37 in the middle of it, and managed to hold on, and anyone crazy enough to do that is crazy enough to say "screw it" on race day at NYC and give the record another shot.