BTS Ultra

BTS Ultra Ultra Trail Running Race in beautiful Bromo Tengger Semeru
UTMB Index ITRA Point
East Java, Indonesia
170K / 100K / 70K / 35K / 18K / 8K

Bromo Tengger Semeru 100 Ultra race is a unique event that aims to challenge your inner spirit and physical state, as well as to provide race participants with magnificent natural beauty and environment of Bromo Tengger Semeru National Park in East Java - Indonesia at various altitude level. Running at the high altitude region of Bromo Tengger Semeru National Park, you will experience tracks with

various sceneries in the background, such as sea of volcanic sand (2.200 masl) with low temperature and strong wind. You will be running through rural back roads, forest path and prairie with a distant magnificent view of the highest mountain in Java, Mount Semeru (3.676 masl) and the tranquility of Lake Ranu Kumbolo (2.400 masl).

That's why we really listen to your feedback and rethink about what's best for the comfort of runners during the race. E...
06/01/2026

That's why we really listen to your feedback and rethink about what's best for the comfort of runners during the race. Enjoy training everybody !!!! ๐Ÿ‘‹


05/01/2026

"๐๐“๐’ ๐”๐ฅ๐ญ๐ซ๐š ๐Ÿ๐ŸŽ๐ŸŽ, ๐–๐ก๐ž๐ซ๐ž ๐‹๐ž๐ ๐ž๐ง๐๐ฌ ๐€๐ซ๐ž ๐…๐จ๐ซ๐ ๐ž๐"

Since 2013, BTS Ultra 100 has stood as Indonesia's first and oldest ultra trail race, proudly holding the UTMBยฎ qualifying standard. To be part of this event is to be part of pioneering history, the very legend of Indonesian ultra trail running.

With immense pride and confidence, the organizers enthusiastically welcome all runners from around the world. This year, we won't just repeating history together, we will carve new chapters amidst the magical landscapes of Bromo Tengger Semeru. Let's make history!!!

โš ๏ธ ๐—™๐—œ๐—ก๐—”๐—Ÿ ๐—–๐—”๐—Ÿ๐—Ÿ ๐—™๐—ข๐—ฅ ๐—˜๐—”๐—ฅ๐—Ÿ๐—ฌ ๐—•๐—œ๐—ฅ๐——!!!

The early bird period for remaining quotas in each category is closing ๐“๐Ž๐๐ˆ๐†๐‡๐“ at ๐Ÿ๐Ÿ‘:๐Ÿ“๐Ÿ—! Don't miss your chance to secure the special rate. After the clock strikes midnight, registration will automatically shift to the normal pricing period.

Don't miss out...time is literally running out!


BTS1002026

WHOAH! Our heart are truly overwhelmed by your explosive enthusiasm, is BEYOND anything we imagined!You are the heartbea...
02/01/2026

WHOAH! Our heart are truly overwhelmed by your explosive enthusiasm, is BEYOND anything we imagined!
You are the heartbeat of this event. Without you guys, there is no spectacular show, we are so grateful!

Urgent notice :
Early bird quotas are running out FAST!
If you've registered but haven't paid, this is your final push! Complete your payment now before the slots are gone and the period changes. Let's do this ๐Ÿค™

The greatest adventures are never truly finished. They live in our bones, whispering a call to return to that place wher...
30/12/2025

The greatest adventures are never truly finished.
They live in our bones, whispering a call to return to that place where the earth breathes mist and the sky burns with dawn. Bromo Tengger Semeru isn't just a destination it's a homing call for the soul.

The euphoria of BTS100 2025 has perfectly concluded, but the journey itself continues. Whether we return to finish what we started, or to answer a new, greater mission, the mountains await.

The next chapter BTS100 2026 is calling.
The highly limited Early Bird slots are NOW OPEN,
these slots will vanish FAST. Don't miss your chance to write your own story in the heart of beautiful Tengger ๐ŸŒ‹

Register Now!
Link in our bio


A chapter of unforgettable cheers, tears, and magic in 2025. Thank you for the memories in BTS 100 2025.Wishing you a Ne...
26/12/2025

A chapter of unforgettable cheers, tears, and magic in 2025. Thank you for the memories in BTS 100 2025.

Wishing you a New Year 2026 filled with light and laughter. Let's doing well and get ready to create even louder echoes in 2026!

We are filled with hope that this partnership will not only continue but grow stronger and more fruitful in the years to...
10/12/2025

We are filled with hope that this partnership will not only continue but grow stronger and more fruitful in the years to come. Thank's again here's to a solid and thriving collaboration ahead!

Thank you for being an integral part of our journey ๐Ÿ™Œ

None of this would have been possible without you.To our dearest sponsors of BTS100 2025, thank you so much for being th...
09/12/2025

None of this would have been possible without you.
To our dearest sponsors of BTS100 2025, thank you so much for being the wind beneath our wings.

Your belief in us made the event come alive in the most spectacular way. May this beautiful partnership continue to flourish and inspire. The future looks bright together!

Once again thank you sponsors .ri .id you made BTS100 2025 extraordinary and full of life ๐ŸคŽ


Running isnโ€™t just about the miles we chase, itโ€™s also about the people we meet along the way.Hereโ€™s to every smile, eve...
14/11/2025

Running isnโ€™t just about the miles we chase, itโ€™s also about the people we meet along the way.
Hereโ€™s to every smile, every โ€œsemangat!โ€, every moment shared with the locals who make the journey feel lighter ๐Ÿ”ฅ

Big thank you to for supporting BTS100 2025. The sport massages on site truly kept our runners going strong. Grateful f...
14/11/2025

Big thank you to for supporting BTS100 2025. The sport massages on site truly kept our runners going strong. Grateful for the collaboration! ๐Ÿ”ฅ

Glimpse of BTS100 2025; Brutal, Sadistic, Torture.But in the endโ€ฆ itโ€™s worth every step. Agree?
13/11/2025

Glimpse of BTS100 2025; Brutal, Sadistic, Torture.

But in the endโ€ฆ itโ€™s worth every step. Agree?

Thank you for the support of .ri , your photobooth and gifts added so much colour to the experience of our participants ...
13/11/2025

Thank you for the support of .ri , your photobooth and gifts added so much colour to the experience of our participants at the race venue!

Thank you .ri for being party of BTS100 2025.

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