第4回 Aroud Toki River　開催日変更2026年6月14日（日）

At the headwaters of the Toki River, the trail traverses “green mountains that nurture clear streams,” connecting the Tokigawa 10 Peaks: Arashiyama, Otsukiyama, Iimoriyama, Tsutsujiyama, Maruyama, Dodairayama, Kasayama, Tokiyama, Raidenyama, and Yumitateyama. The 4th Aroud Toki River presents as a mountain day first, a race second, structured around forested ridges, old hill names, and broad views across the Kanto plain. You run through the woods of the “town of wood,” on a course described as “a trail embraced by rich nature.” Anticipate a course-focused outing rather than a polished road event: climbs, linked summits, forest sections, and those moments where the trees open to reveal the view. Its distinct feature is the route itself, a path where nature and history are said to be “beautifully fused.”