# 3rd UPRUN Musashi Kosugi Tamagawa Marathon
_第3回UPRUN武蔵小杉多摩川マラソン_

- **When:** Sat, Dec 12, 2026 (JST)
- **Where:** 丸子橋高架下付近, 崎市中原区 — 神奈川県 川崎市中原区 川崎市中原区上丸子八幡町先
- **Map:** https://www.google.com/maps/search/?api=1&query=35.6665522,139.680632
- **Price:** price on the official site
- **Category:** Sports & Competitions
- **Official site:** https://up-run.jp/events/up-musashikosugi3/
- **On Tokyo Events:** https://eventstokyo.com/en/events/3uprun

![](https://up-run.jp/ogp.jpg)

A flat and easy-to-run course along the Tamagawa riverside. Ideal for experienced runners aiming to set a new personal record and for beginners looking for a good training opportunity. Automatic timing is provided, making it a great event for anyone who wants to track their time. Organized by the UPRUN Executive Committee.

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Source: Tokyo Events — https://eventstokyo.com/en/events/3uprun