Amazean Jungle Thailand by UTMB 2027 - Betong

Amazean Jungle Thailand by UTMB 2027 is an international UTMB World Series trail-running festival based at Betong Mongkollit Tunnel in the forested hills of Yala province, on Thailand's southern border. The 29 April to 2 May 2027 programme features demanding tropical mountain routes, a family-friendly night run and qualifying events awarding UTMB Running Stones.

Courses and start times (ICT, UTC+7)

The organiser's category names do not equal measured route lengths:

• BETONG 100M: actual 115 km, 5,600 m+ ascent, four Running Stones; Friday 30 April at 16:00.
• TUNNEL 100K: actual 91 km, 4,400 m+ ascent, three Running Stones; Saturday 1 May at 04:00.
• JUNGLE 50K: actual 56 km, 2,600 m+ ascent, two Running Stones; Saturday 1 May at 06:00.
• MIST 20K: actual 26 km, 1,000 m+ ascent, one Running Stone; Sunday 2 May at 05:00.
• FLOWER 20K: actual 17 km, 500 m+ ascent, one Running Stone; Sunday 2 May at 07:00.
• Saturday Night Run: actual 4 km, 70 m+ ascent; Saturday 1 May at 18:30, advertised THB 330.

The ARC 100K and 50K filters reflect the organiser's class labels only (the 91 km Tunnel and 56 km Jungle courses). Neither is a measured 100 km or 50 km route. The 115K, 26K, 17K and 4K routes are accurately described here; ARC does not currently offer matching exact distance selectors for them.

Entry information and qualification

General registration opened 23 October 2026, after a 48-hour priority registration window for valid UTMB Index holders from 21 October. Advertised Tier 1 / Tier 2 / Tier 3 fees are: Betong 100M THB 8,000 / 9,200 / 10,000; Tunnel 100K 6,000 / 6,900 / 7,800; Jungle 50K 3,500 / 4,000 / 4,500; Mist 20K 2,000 / 2,200 / 2,400; Flower 20K 1,000 / 1,100 / 1,200. The relevant tier may sell out, 8% administration charges are additional, and live availability must be checked at the official checkout. Payment is normally required within 72 hours of applying.

Runners in the Betong, Tunnel, Jungle and Mist races must have been born in 2007 or earlier, while Flower accepts those born in 2014 or earlier. Long-distance events require demonstrated previous trail-running experience in an appropriate UTMB Index class. Confirm eligibility before paying.

Race-pack collection and runner welfare

Race-pack collection and the expo run 11:00-20:00 ICT on Thursday 29 April, Friday 30 April and Saturday 1 May at Betong Mongkollit Tunnel. Mandatory briefings for Betong 100M are Thursday 29 April 17:00-18:00 at Betong Clock Tower; remaining main-race briefings are Friday 30 April 17:00-18:00 at the same location. Finish-line closure is Sunday 2 May at 14:00.

Registration includes a bib, participation T-shirt and gift bag, accident insurance, aid stations, medical support and suitable drop-bag handling. Qualified finishers receive a medal and additional finisher apparel, except the Flower 20K does not include the finisher shirt or hoodie. Entry transfers and distance changes may be possible until 31 March 2027, subject to fees, eligibility and available places. No general refund is available without qualifying cancellation insurance. Review the organiser's mandatory kit, mountain weather, cut-offs and current route maps before travelling.

Verified organiser sources: official event, registration rules and fees, detailed 2027 programme.