Time Out says
With over 100,000 participants since 1986, Oxfam Trailwalker Hong Kong is one of the SAR’s biggest and longest-running outdoor events. The race is a 100km trail walk over the Maclehose trail, which stretches from the middle of Sai Kung Country Park all the way to Tuen Mun on the opposite side of Kowloon. Plucky participants have 48 hours to complete the race. The best part is you can feel extra special about it because it’s all for a good cause – over the years, the event has raised over $575 million to support Oxfam’s various poverty alleviation and emergency relief projects in Africa and Asia. Registration is open until October 15.