Guardian sports writer Jonathan Liew says useful idiots in the media are helping a mysterious right-wing think-tank grow a sinister campaign against the event.
Bosses have emailed local organisers across Britain warning them that reams of data outlining course records, the most first-place finishes, and age grade records will no longer be published.
Biological men hold at least three Parkrun female records because of its policy that lets entrants self-identify their gender, according to the Policy Exchange think tank.