videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Cheseboro Half Marathon - Great Race of Agoura Hills 2014 - by Steve Mackel, Athens Classic Marathon 2010 - 2500th Anniversary, Born To Run Ultra Marathon Races 10mi, 50k, 100k, 100mi - May 2013