A historic first for the UTMB World Series in Indonesia with new Trail of the Kings – Lake Toba by UTMB

Trail of the Kings – Lake Toba by UTMB® will make its debut on the UTMB® World Series calendar this October 17-19, 2025, bringing the UTMB® experience to Indonesia and the local trail running community for the very first time. Held on the Samosir Island, a large volcanic island in Lake Toba, this brand-new event promises an unforgettable experience in one of Southeast Asia’s most culturally rich and geologically unique destinations.

A fast-growing region for trail running

With trail running continuing to gain momentum and grow in popularity across Asia, the event is a welcome and exciting opportunity for runners to experience the UTMB World Series adventure close to home. In 2024, almost 170,000 Asians and more than 6,500 Indonesians, held a valid UTMB Index. In total, 23,500 runners took part in Asian events on the UTMB World Series circuit in 2024, a clear demonstration of the strong and growing interest in trail running among the region’s population. The new Trail of Kings – Lake Toba by UTMB enhances the accessibility of trail running in the country and offers another opportunity to collect Running Stones.

An event anchored in the local history and local culture

Much more than just a race, the event pays tribute to the Bataknese heritage. The event’s name, Trail of Kings – Lake Toba by UTMB, reflects the legacy of the region’s ancestral kings who forged communities by carving paths through thick jungle and mountainous terrain. Now, trail runners are invited to follow in their footsteps across one of five race distances – 5K, 10K, 28K, 60K, and 100K – while honoring their ancestors and running with pride through sacred lands.

From rugged terrain and dense forests to the largest volcanic lake in the world, the natural beauty of Lake Toba is one of a kind. With local volunteers ready to greet runners at the aid stations throughout the course, the event promises to be filled with community celebrations, respect and gratitude for this truly unique part of the world.

Florian Lamblin, Executive Director for UTMB World Series, says: “Trail of the Kings - Lake Toba by UTMB marks an important milestone for our circuit: the integration of our very first event in Indonesia, in the heart of one of Asia's most spectacular regions. The island of Samosir and Lake Toba offer a majestic setting steeped in history, in line with our intention to offer races that are deeply rooted in the local culture and the territories that host them. We are proud to collaborate with a passionate local team and to see the commitment of the communities, which will contribute to providing runners with a unique local UTMB experience.”

The Governor of North Sumatra, Muhammad Bobby Afif Nasution, S.E., M.M., stated that “this event is not just a competition, but a significant opportunity to showcase the richness of North Sumatra. This event is expected to attract more foreign tourists, encourage economic growth in North Sumatra, especially the Lake Toba area, and elevate Lake Toba as a symbol of the revival of Indonesian sports tourism on the global stage.”

Ruth Theresia (IDN, UTMB Index 518), says: “Having a UTMB event in my country is an absolute historical moment, not only for individuals but also for the communities. It’s an opportunity for Indonesia to exist into the global trail running scene showcasing the nature, the people, and culture. It also gives a chance to Indonesian athletes to chase their dreams, compete at a global level, and develop their skills. All eyes are waiting for it!”

Upi Supriatna (IDN, UTMB Index 722), says: “Indonesia has amazing mountains and natural landscapes, mountains with unique and attractive tracks with favourable weather in every race, but Lake Toba offers something different to conquer. Put your best foot forward, show your smile. See you at the race!”

Entries for the 2025 Trail of the Kings – Lake Toba by UTMB will open to UTMB Index holders on 14 July while general registrations open to all runners on 16 July as the event welcomes runners to come and ‘Live your legend at Lake Toba’. For more information, visit https://laketoba.utmb.world/