I loved the 2016 Ottawa Marathon but it was during a heat wave (newspapers the following day had the headline "HOTTAWA") and nearly got cancelled! I still had a successful race despite the weather, and the race management did an excellent job keeping us informed of all last-minute changes to start times and race day conditions. However the aid stations and medical stations were overloaded and later in the day they had to re-route runners to finish with only 20 miles instead of 26 miles because too many people were suffering in the heat. I was fortunate and was allowed to finish all 26 miles. The crowd support was fantastic and many people along the route turned on their lawn sprinklers and garden hoses to cool us down, and some even handed out ice pops! A really fun race through the Canadian capital city, and usually a cool race (so I hear).