The AP wrote:
Tokyo Governor Yuriko Koike is angry about it. Her allies say no change is needed and have raised questions about who will pay if the move goes through, and have not ruled out a lawsuit to recover damages.
Taro Shirato and Hiroshi Yamada, members of Koike’s political party in the metropolitan legislature, told a news conference Tuesday that moving the marathon would cost at least $34 billion yen (about $310 million).
$300 million to move a marathon?
How much does it actually cost to put on a marathon? And if anything I"d think it would be cheaper to put on in Sapporo than Tokyo although there might be some travel costs.