The organizers of Tamarack Ottawa Race Weekend and OC Transpo say that O-Train Line 1 will open at 5 am on Sunday, May 26, to help runners, volunteers and spectators travel to the start line of the Tartan Ottawa International Marathon. Biggest multi-day race event in Canada Tamarack Ottawa Race Weekend is the biggest multi-day … Continue reading O-Train Line 1 opening early for upcoming Tamarack Ottawa Race Weekend