The couple switch out every five kilometres while the other drives behind them in a dark blue Ford truck, for a total of approximately 50 kilometres a day. 

The truck following behind is filled with colourful painted handprints from allies across Canada. They have big flags attached to the box of the truck and a sign with "walker ahead" in big white letters is on the back, warning oncoming traffic of their presence. 

To read the full story, visit the CBC News site here.