The Hiking Organization of Southern Africa (HOSA) has been the key implementer of Green Flag Trails in South Africa under their Quality Assurance programme. With this endorsement Green Flag Trails has become the leading trail advisory and trail assessment body in southern Africa.

The system has received endorsement from the major hiking trail marketing agencies in South Africa: The National  Parks Authority (SANParks); provincial conservation bodies (e.g. Cape Nature and KZN-Wildlife), major metropolitan structures, Resort developers (e.g. Forever Resorts), NGO’s  and many private trail owners.