It's one of the most unique sporting events in the world and it's right here in Northern Michigan - the Au Sable River Canoe Marathon.

Teams of two will depart at 9pm from Grayling Saturday night and race overnight 120 miles to Oscoda. This year's field is the largest in history with 94 teams registered to race.

Kaz and Corey caught up with a few of the teams on Friday before they launch on Saturday.