Hyoung Chang, The Denver Post
Matt Diorio of Denver, front right, and Mario Kart racers are fitting the helmet before their competing Mushroom Rally at K1 Speed: Indoor Kart Racing in Littleton. April 6, 2019. Australia-based Mushroom Rally brought its Mario Kart racing to K1 Speed. About 600 racers dress up as Super Mario characters and drove around a custom-made track for 30 minutes each, collecting stars to earn prizes. 
Getting your player ready...
Australia-based Mushroom Rally brought its Mario Kart racing to K1 Speed. About 600 racers dress up as Super Mario characters and drove around a custom-made track for 30 minutes each, collecting stars to earn prizes.