Ehime SDF 40 km hike Oct 10

Japan’s Self-Defense Forces in Ehime used its public affairs account on X on September 8 to promote an overnight 40-kilometer hiking event set for October 10 in Matsuyama, according to a post cited in social-media monitoring and city materials. The teaser linked to a YouTube video and described the event as a one-night, roughly 40-kilometer challenge. Matsuyama city materials show the event itself is not new. The city says the “Overnight Hiking” program is held around October each year and sends participants across a course of a little more than 40 kilometers over one night. The city page updated on September 4 lists the event as a long-running youth-oriented challenge run by the Matsuyama Youth Development Civic Council. (x.com) ### What exactly is being promoted? The September 8 teaser promoted “Overnight Hiking 2026,” an event in which participants walk through Matsuyama overnight and return the next morning after covering about 40 kilometers, according to a recent local feature on the event. That article says the 2026 edition is scheduled for Saturday, October 10. The same local report says an opening ceremony is planned for 7 p.m. at Matsuyama Youth Center, with the walk starting at 8 p.m. and finishing back at the same site the following morning. (city.matsuyama.ehime.jp) ### Who runs the hike, and where do the SDF fit in? Matsuyama city says the event has been run since fiscal 2011 by organizations within the Matsuyama Youth Development Civic Council, after earlier joint hosting arrangements changed. (ehime-epuri.jp) The city describes it as a civic youth-support program rather than a Self-Defense Forces event. The Ground Self-Defense Force’s Matsuyama garrison has supported the hike in prior years. Activity records on Defense Ministry pages say the garrison supported the 2024 and 2025 editions of the overnight 40-kilometer walk organized by the Matsuyama Youth Development Civic Council, walking with participants and providing assistance. ### Who can take part? (city.matsuyama.ehime.jp) A September 4 local feature says eligible participants include people from fourth grade in elementary school up to age 34, as well as parent-child, workplace or other groups that include at least one person in that age range. The same report says groups made up only of people 35 or older are not eligible. That age structure helps explain why the event appears in Matsuyama’s youth-support programming. (mod.go.jp) The city says the hike draws young people and a wide range of age groups despite the demanding overnight format. ### How big has the event been in recent years? Matsuyama city published five years of results on its event page. (ehime-epuri.jp) The city said 266 people took part in 2025 and 221 finished, compared with 244 participants and 232 finishers in 2024. Earlier counts were 224 participants in 2023, 173 in 2022 and 166 in 2021. (city.matsuyama.ehime.jp) Defense Ministry activity pages also show the event has been staged on similar October weekends in recent years, including October 12-13, 2024, October 11, 2025 and October 8-9, 2022. ### Where can people verify the next step? October 10 is the next dated milestone. Matsuyama city’s event page says the hike is held around October each year, while the recent local feature says the 2026 walk is scheduled to begin at Matsuyama Youth Center on the evening of October 10. (city.matsuyama.ehime.jp) (mod.go.jp)