Sapporo Marathon is one of Northern Japan's largest citizen half-marathons, starting in 1976 and held every autumn. Participants pass through landmarks including Susukino (すすきの) and Odori Park (大通公園), making it an event enjoyed by runners of all ages.
In addition to the half-marathon, there are 5km, 3km, 2km, and 1km categories for families and children, so beginners can participate with confidence. Check the official website for more details.