Spectators urged not to attend Olympic marathon

Runners compete during the Hokkaido Sapporo Marathon Festival, Olympic Test Event on May 5, 2021 in Sapporo, Hokkaido, Japan. (Photo by The Asahi Shimbun via Getty Images)

Fans have been urged to stay away from the Tokyo Olympic marathon and race walk events in Sapporo, as part of Covid-19 safety measures