The canter attracted 108 runners, including several descendants of former Palmerston constable Bert Kelly, whose wartime runs up Puketapu on coastal-watch duties led to the establishment of Kelly's Canter in 1971.
The race took place in steady rain and the times were slower as runners had to negotiate a slippery downhill section.
The first man home, Jake Jackson-Grammer, of Dunedin, recorded a time of 21min 03sec.
That was almost a minute slower than the 20min 4sec recorded by Jonah Smith, of Dunedin, last year.
Sabrina Grogan (Christchurch) was fastest woman in 22min 10sec.