These forgotten mountain paths in Northern Thailand are every trail runner's dream - SilverKris

"A guide-run operation led by Sébastien Bertrand, a former outdoor-industry product manager from Annecy who relocated to Thailand to build and showcase long-distance routes. The service offers guided multi-day runs through very remote foothills, with the leader’s intimate knowledge of the terrain proving indispensable for navigation and safety; groups have included high-profile Asian ultra-runners and the outings emphasize both technical challenge and immersion in rarely-visited mountain villages. Plans to stage a 100-mile race were explored but, lacking permissions, the operation instead focuses on curated trail experiences for ambitious runners." - Ric Stockfis