A record of 385 runs under 40 minutes in the Braidwood Showground Parkrun 2018
There were 14 separate events on Saturday mornings from 2018-09-22 to 2018-12-29.
The file has five columns: Date; PR; Time; Category; Gender. All data are in the public domain.
http://www.parkrun.com.au/braidwoodshowground/results/eventhistory/