Bromo Tengger Semeru 100 (BTS100)
Semeru, Indonesia • 8-9 Nov 2025
Bromo Tengger Semeru 100 (BTS100) is an exhilarating ultra-running event set in the stunning Bromo Tengger Semeru National Park in East Java, Indonesia. This race challenges participants both physically and mentally, offering breathtaking views of diverse landscapes, including volcanic sand seas and lush forests. Runners will traverse various altitudes, experiencing the unique environment of the park, with highlights such as Mount Semeru and Lake Ranu Kumbolo. The event promotes not only athletic endurance but also an appreciation for the natural beauty of the region, making it a memorable experience for all participants. Visit the organization's website for the most recent information.