The Oxfam Trailwalker (OTW) is one of the largest fundraising sporting events in Hong Kong. The 100 km trail starts from Pak Tam Chung in Sai Kung and finishes at Crossroads Foundation in Tuen Mun. There are nine checkpoints along the route. Participants must form a team of four, aged over 18. The OTW route is quite challenging; participants have to hike up 23 hills/mountains, including Tai Mo Shan – the highest of them all, climbing a total of about 4,830 meters. It also involves many uphill and rugged roads. As such, participants are advised to train adequately before the event.

The donations raised through the OTW help Oxfam Hong Kong (OHK) and communities fight poverty to improve their lives. These donations have also enabled OHK to implement various poverty alleviation projects.