Kimetto and Radcliffe: Marathon World Record Holders Cross Paths at the 2015 Virgin Money London Marathon, from ESPN.com (thanks to Tim Jeffries and Chris Chavez)
This is the best video I have seen on this subject. Tim Jeffries and Chris Chavez, working for ESPN.com and ESPN Endurance blog, did this piece on Dennis Kimetto and Paula Radcliffe, the world record holders in the marathon, both racing on Sunday, but both with different goals.
Fascinating and fun video! Please watch it!