Ultra Running Hub Pekan Tamparuli, Kota Kinabalu, Malaysia · Saturday, April 3, 2027
Fixed Distance 50K
Borneo Ultra Trail Marathon BUTM - 50 km
176 days away
50 km Distance
2,230 m Climbing
5.8 Grit · Challenging
What the course asks
Climbing rate 45 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 17 hours
20:24 min/km average. Generous. Walkable throughout for most of the field. Among the most forgiving 50K cut-offs we track. Measured against 1048 races of the same distance. Cut-off calculator →
Field size ~310 Large. Rarely out of sight of another runner.
DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, April
Daytime high 28°C
Night low 23°C
Rainfall Showers likely
Daylight 12 h 11 m of light
Regional 2001-2020 average for April — NASA POWER, grid elevation 468 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 310 | Wilsen Singgin · 06:20:39 | Chisato Kario · 07:55:18 |
| 2025 | 50km | 258 | Daved Simpat · 05:28:56 | Agustoralin Sabanal · 07:11:13 |
| 2024 | 50km | 245 | Milton Amat · 06:05:06 | Shamiera Shamiera Auther · 08:22:12 |
| 2023 | 50km | 244 | Wilsen Singgin · 06:08:06 | Shamiera Shamiera Auther · 08:21:02 |
| 2022 | 50km | 172 | Mohamad Affindi Bin Nudin · 06:29:51 | Amy Bartlett · 08:30:46 |
| 2020 | 50km | 275 | Gustin Tiam · 06:04:43 | Lauren Woodwiss · 07:32:29 |
| 2019 | 50km | 356 | Ji-Sub Kim · 05:40:37 | Jassica Lintanga Pado · 08:19:01 |
| 2018 | 50km | 293 | Petr Novotny · 05:45:33 | Ngon-Sin (Cindy) Fan · 08:43:42 |
| 2017 | 50km | 235 | Joon-Kien Liew · 06:45:38 | Margaret Rait · 07:57:42 |
| 2016 | 50km | 190 | Wen-Shan Lim · 06:10:51 | Elvina Jimin · 08:50:59 |
The field grew 20% between 2025 (258) and 2026 (310). 20% of the 2026 field were women.
DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- terrain This is a mountain course. Poles are highly recommended for the sustained climbs.
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 2,230 m of ascent.
- Trail Running Shoes 45 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Pole attachment and chest-strap stability on steep ground.
- Trekking Poles 2,230 m of ascent to walk up.
- Headlamps A 17 h limit puts you out there after dark.
Similar races
Other 50K trail ultras, closest in distance first.