Bromo Tengger Semeru 100 (BTS100)
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Bromo Tengger Semeru Ultra Run (BTS100)
The Bromo Tengger Semeru Ultra Run is organised by F-One Sport and takes place on 07-08 November 2026 in TNBTS, East Java. The event offers multiple distance options across the park at different altitude levels.
Distances available:
- 170 km
- 100 km
- 70 km
- 35 km
- 18 km
- 8 km
Runners follow routes that cross high altitude areas and varied terrain. Course sections include rural back roads, forest paths, and prairie. Participants will encounter a sea of volcanic sand around 2,200 masl with low temperatures and strong wind. Several viewpoints include Mount Semeru at 3,676 masl and Lake Ranu Kumbolo at 2,400 masl.
Two new categories are listed for this edition. The 18 km category is introduced as a shorter experience inside Bromo Tengger Semeru National Park. The 35 km course is a revised and extended version of the former 30 km route, described as intended to reduce waiting lines for that distance.
The event aims to test physical and mental endurance while exposing participants to the park environment across a range of altitudes. The race is supported by TNBTS. Visit the organization's website for the most recent information.