10km
Running
- Distance
- 10K
- Countdown
- 66 days
- Entry fee
- $18.99
www.sportsentry.ne.jp
Running
Running
Running
Running
Running
Running
3-year monthly averages for January in Tokyo.
Learn more about the host city, Tokyo.
Tokyo, officially the Tokyo Metropolis, is the capital and most populous city of Japan. The population of the city proper was over 14 million as of 2023. The Greater Tokyo Area, which includes Tokyo and parts of six neighboring prefectures, is the third-most populous metropolitan area in the world, with 33 million residents as of 2025.
Read moreTours and activities near Tokyo, powered by Viator.
Read what other athletes have to say about their experience at the 257th UP RUN Imperial Palace Marathon (第257回 UP RUN皇居マラソン).
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