Hong Kong 100 The Grand Sam

The Grand Sam challenges runners to complete The Third (31km), The Half (50km), and HK100 (100km) back-to-back over 3 consecutive days — 181km and 8,541m of elevation in total. Named after Hong Kong runner Sam Tam, who famously ran The Half and HK100 back-to-back when The Half was introduced in 2020, the Grand Sam became a formal challenge in 2023. All 10 participants finished in the inaugural edition. Grand Sam finishers receive a unique hoodie and personalised trophy — distinct from the awards earned for each individual race.