In 1995 participants in a marathon running clinic put on by Marathon Dynamics Inc. (MDI), (a company formed by locals Michael Brennan and Paul Vacirca to provide running clinics and personal coaching for runners of all levels), decided they wanted to keep running together after the clinic. So the club was created. Word got out and the club grew.
In 2008 the club changed its name from Marathon Dynamics Running Club to Toronto Running Club, its new name being less intimidating with the word ‘marathon’ out of it and more suitable given that many members don’t run marathons and may never. Thus everyone feels more welcome and they are!