GPS art: the hybrid activity mixing creativity and fitness

GPS art or GPX is a combination of both fitness and artistic activity. Your movements, traced by GPS signals, become the paint on a city-sized canvas. You can run, ride or walk your artwork through popular fitness tracking apps such as Strava and the path of your choosing. Tackling the streets and cycleways of Sydney, Guardian Australia find out first hand the physical challenges and creative triumphs of the activity.