Bromo Tengger Semeru 100 (BTS100)

The Bromo Tengger Semeru 100 (BTS100) is an ultra running event held in Bromo Tengger Semeru National Park, East Java, Indonesia. It offers multiple race distances including 170km, 102km, 70km, 30km, and 8km, challenging participants across various altitude levels. Runners experience diverse terrains such as volcanic sand seas at 2,200 meters above sea level, rural back roads, forest paths, and prairies. The course features stunning natural scenery including views of Mount Semeru, Java's highest peak at 3,676 meters, and the serene Lake Ranu Kumbolo at 2,400 meters. The event combines physical challenge with breathtaking landscapes in a unique high-altitude environment. Visit the organization's website for the most recent information.