Bernard Lagat sets the masters world record at the 5K road distance.
After a blazing U.S. Half Marathon Championship, Estrada seeks a record-setting time at the Carlsbad 5000.
She's rewritten the record books in track. Now she's hitting the roads.
Last year's top American is dreaming big for this year's 5K.
She no longer lives near Carlsbad, but she's always there at the starting line.
The track great shares his thoughts on a variety of topics.