Backyard Ultra Last Samurai Standing – Tokyo

Backyard Ultra Last Samurai Standing - Tokyo is a small backyard ultra in Tokyo, Japan, running since 2020 and usually held in late autumn. Runners repeat the same hilly loop again and again, starting a new yard on the hour until only one person can continue. The series has logged seven editions, with fields averaging 21 starters, making it a compact endurance showdown rather than a large mass race. The course is located at about 37 meters above sea level near 35°40′34.3″N, 139°39′1.1″E. Each lap includes 55 meters of climbing within a short 180-meter loop. This climb makes the race challenging from the start, as each yard adds vertical gain instead of allowing runners to establish a flat rhythm. Michitaro Mizuno holds the course record with 70 yards and is also on the total-yards record list, while Tomomi Tsutsumi has the women’s mark at 40 yards. Yukinori Yoshida is listed as Yardmaster with 192 yards, and Tetsuo Kiso is also named in the total-yards records.