Top Definition
An urgent diarrhea either during or after a running race or training run.

Named after Peter Englehart, CEO of Competitor Group, organizer of the Rock and Roll Marathon series. A large number of participant in the 2011 Las Vegas Rock and Roll Marathon experienced diarrhea and other symptoms during and after the event.
I was having a good run this morning but had to stop half way and do an Englehart.
by Philip McCracken December 18, 2011

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