Think kayaking requires a river or open water? Well these guys are a bit more imaginative.

This GoPro footage shows kayaking stars Ben Marr and Rush Sturges flying down a drainage ditch in Vancouver at over 70kmh. 

If you're not brave enough to try this ridiculous stunt yourself, just lean back and enjoy from the comfort of your couch/office chair. And if you are, you might not want to bring your best kayak - all that gravel is bound to scrape a hole in the bottom.