The Tokyo Marathon is an annual marathon sporting event in Tokyo, the capital of Japan. It is an IAAF Gold Label marathon and one of the six World Marathon Majors.

Sponsored by Tokyo Metro, the Tokyo Marathon is an annual event in Tokyo, the capital of Japan. It is an IAAF Gold Label marathon and one of the six World Marathon Majors.

How popular is this race? When registrations closed for the 2015 Tokyo Marathon, 308,810 people had applied to enter the race. That was 11.3 times more than the race could accept!