Flower 20K is the 17.0km trail race at Amazean Jungle Thailand by UTMB 2027 (Betong Mongkollit Tunnel, Thailand). The race starts on May 2, 2027 at 07:00 AM. It starts in Betong Mongkollit Tunnel and finishes in Betong Clock Tower. The time limit is 6 h.
The course climbs 500m+. With 29m/km of climbing, this is a rolling, mostly runnable course. By gradient, 20% of the distance is uphill, 24% downhill and 56% flat. Flat-equivalent effort: 23.6 FlatKM.
The course is runnable enough that trekking poles are not needed.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from 24°C to 25°C, with around 25°C at the highest point; the chance of precipitation is about 71%. Heavy rain of 10.0mm or more falls on about 15% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Flower 20K.
Other distances of Amazean Jungle Thailand by UTMB 2027Betong 100M (115km)·Tunnel 100K (91.0km)·Jungle 50K (56.0km)·Mist 20K (26.0km)
Other editions of Flower 20K2026
Official websiteamazean.utmb.world
