It's the fastest human-powered winter sport and Canadians are leading the charge. The CBC’s Omar Dabaghi-Pacheco laced up his skates and took the ice to find out how hard speed skating really is.

The Aerovelo hit 139.44kph (86.65mph) at its top speed and here's how they did it... How hard is this record to achieve? Todd Reichert: This is a huge challenge. There is an intensely competitive ...