I've got a soft spot for front-runners but I can't think of a true 5k that's been run faster by someone leading the whole way. That's a technicality though because I know Bekele has closed a 10k by running a sub-13 final 5k. Anyway, two questions.
1) what are the fastest 5k's won by a front-runner. Has anyone done better than 13:08 leading most if not all of the way?
and 2) what's Chelimo's 13:08-fitness worth with pacers through halfway or 3k? Surely sub-13, right? My estimate is 12:55.