2026 LAKE BIWA 100 will be held from Oct 30 to Nov 1. Bib distribution is Oct 29.
Entries for the 2026 race are planned to open on May 1, 2026.
LAKE BIWA 100
Experience Japanese Nature & Culture
The Lake Biwa 100 course takes you on a journey through various ecosystems and historical sites in the Kansai region of Japan, skirting Lake Biwa the biggest lake in Japan for most of the course. With only 330 participants and a generous 52-hour cut off, the race keeps its authenticity, with friendly smiles at the hospitable aid stations. But don’t let that fool you: despite the highest peaks being only around 1200m (4000ft), the technical 169km course boasts over 10,500m (34,400ft) of elevation gain. From 2024, it is Japan’s only Hard Rock 100 Qualifier, and for good reasons.
DIVERSE MOUNTAIN RANGES
The three main traversed ranges are Suzuka, Hiei and Hira, each presenting unique challenges and rewards, with both highest climbs located near the start and finish.
VIEWS OF LAKE BIWA
Japan’s largest body of freshwater, you will get vistas throughout the race. The goal is at a beach on its western side and many finishers dive in after passing the finish line.
VARIED ECOSYSTEMS
From primeval forests, to semi arid sections, cascades and tall pine forests, the flora around you sometimes changes in a matter of minutes.
HISTORICAL SITES
Pass by many Buddhist Temples and Shinto Shrines, including Enryaku-ji on Mt. Hiei, home to the famed Marathon Monks.
Qualifying race for WS100
YouTube Live
LAKE BIWA 100 channel
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4 April 2026
2026 LAKE BIWA 100 will be held from Oct 30 to Nov 1. Bib distribution is Oct 29.
Entries for the 2026 race are planned to open on May 1, 2026.
