Ottawa Race Weekend organizers are floating the possibility of cancelling running events this weekend because of hot temperatures and high humidity. Safety over personal bestsTrottier said his first shift as a paramedic was during a similarly hot Ottawa marathon weekend 34 years ago. Shorter races are scheduled to start Saturday afternoon, while the half marathon and marathon are set for Sunday morning. There were some calls during the race but mostly after the race, hours after. Doug Duff says keeping hydrated in the days leading up to a race on a hot day is important to stay safe.

Source: CBC News May 27, 2016 10:28 UTC