I was thinking today there are many 1350 to 1420 5k runners that are very good runners but never get a chance because they are just not good enough to make it big so they are left to get a job or win local 5k or 10ks.
I was looking at the USA track and field standards and its 23 min for the A standard in the 5k? seems like for an athlete as good as 14 min flat 5k could master the walk and take on this task and maybe even go to the Olympics or worlds?