Langbiang 100K is the 102km ultra trail at Vietnam Highlands Trail by UTMB 2027 (Lam Vien Square, Vietnam). The race starts on January 9, 2027 at 03:00 AM. It starts in Lam Vien Square and finishes in Clay Tunnel. The time limit is 29 h.
Hold a steady pace and save energy for every section.
The course climbs 5570m+. With 55m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 42% of the distance is uphill, 37% downhill and 21% flat. The longest climb runs 7.4km at an average 7.9% grade (581m of vertical). The longest descent runs 17.3km at an average 6.9% grade (1191m of vertical). The steepest climb averages 43.6% over 0.4km. The steepest descent drops at 48.9% over 0.5km. Surface: 40% trail, 24% smooth, and 12% road. Flat-equivalent effort: 144.4 FlatKM.
Poles bring little benefit here: only about 15.9km of pole-friendly terrain.
Quad damage risk is high (index 53 of 100), with 48% of the load in the first half: 2 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.
On race day, start temperatures have historically ranged from 11°C to 15°C, with around 11°C at the highest point; the chance of precipitation is about 15%. Heavy rain of 10.0mm or more falls on about 2% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Langbiang 100K.
Other distances of Vietnam Highlands Trail by UTMB 2027Elephant 50K (56.4km)·Pinhatt 20K (24.1km)·Tuyen Lam 10K (11.3km)
Official websitevietnamhighlands.utmb.world
