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4 events in Shinjuku, Tokyo

From big races to Saturday morning group runs—find マラソン (marathon) events and connect with the local endurance sports community.

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  • Ecomarathon Horikiri [finishers.com] [Register at finishers.com]

    Sun, Mar 29, 2026

    Description

    Get ready for the Horikiri Ecomarathon, a sporting experience in March in the heart of Tokyo Prefecture in the Japan 🇯🇵. Specifically, it is in the Katsushika Ward, near Horikiri Shoubuen station, at...

    Get ready for the Horikiri Ecomarathon, a sporting experience in March in the heart of Tokyo Prefecture in the Japan 🇯🇵. Specifically, it is in the Katsushika Ward, near Horikiri Shoubuen station, at the Horikiri Waterside Park, where you will start your race at 11 AM sharp ! 🕚 You are therefore set for two race options: a half-marathon or a 10 km, all in the form of a loop. If you have come with your family 👨‍👩‍👧‍👦, a parent-child 5 km race is organized. The course also takes the form of a loop 🔂. You will enjoy a course surrounded by lakes, ponds, and beautiful nature 🍃. You will be immersed in a peaceful and inspiring environment, perfect for breaking your personal record or simply savoring every stride 💪. Moreover, you run in a small group of 300 people, ideal for meeting new people 🤗.

    5k 10k Half Marathon Marathon Run

    Shinjuku, Tokyo, Japan
    OpenStreetMap Google Maps
  • April Ecomarathon Nikotama [finishers.com] [Register at finishers.com]

    Sun, Apr 12, 2026

    Description

    Get ready for the Nikotama Ecomarathon, a sporting experience in April in the heart of the Setagaya prefecture in Japan 🇯🇵. More precisely in the city of Nikotama (also called Futako-Tamagawa), by...

    Get ready for the Nikotama Ecomarathon, a sporting experience in April in the heart of the Setagaya prefecture in Japan 🇯🇵. More precisely in the city of Nikotama (also called Futako-Tamagawa), by the Tama River, in the Tamagawa Futako Bridge Park, where you will start your race at precisely 11:00 AM ! 🕚 You're heading out for two races to choose from: a half-marathon or a 10 km, all in a loop format. If you've come with family 👨‍👩‍👧‍👦, a parent-child race of 5 km is organized. The course also takes the form of a loop 🔂. You can enjoy a track surrounded by lakes, ponds, and beautiful nature 🍃. You'll be immersed in a peaceful and inspiring environment, perfect for breaking your personal record or simply enjoying every stride 💪. Moreover, you'll be running in a small group of 300 people, ideal for making new friends 🤗.

    5k 10k Half Marathon Marathon Run

    Shinjuku, Tokyo, Japan
    OpenStreetMap Google Maps
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