Tokyo's turbulent countdown

"The fact that we don't know if roadside spectators will be allowed is a big problem for us－it means some of our preparations won't be needed," said Watanabe, listing items such as tents, toilets, and parking spaces.

Organizers in Oyama have set aside money to buy up to 5,000 masks for the onlookers－if they are allowed to gather.

"Once we do find out, it's going to be a real scramble," Watanabe said.

REUTERS