【猛暑対策】ピーエスエス皇居健康ランニング令和8年9月5日大会 2026

PSS Imperial Palace Healthy Running is a small Saturday morning race and training meet around Tokyo’s Imperial Palace, starting and finishing near the clock tower inside Sakuradamon. Runners can enter 5 km, 10 km, or 20 km as individuals, and there is also a 20 km relay for teams. The field is modest, with individual events capped at 100 people and the relay capped at 25 teams, and the individual entry fee is only 1,000 yen. The event uses manual timing with a stopwatch and printer, so it feels closer to an organized practice session than a polished big-city race. The course is built around repeated Imperial Palace laps, which makes it useful for checking pace, fitness, and marathon preparation without planning a long run alone. The organizer, PSS Inc., calls it “Japan’s most casual race,” and the rules back that up: late arrivals are allowed, same-day entry is allowed, runners can switch events on the day, and someone who stops early can still be recorded for the distance they actually ran. At the same time, the longer races have real cutoffs, including lap requirements for the 20 km, so runners still need to watch the clock. Everyone receives an award, and participation gifts have included a sports drink, an izakaya meal voucher, and a magnetic chip.