Heart attack survivor Heather Gardner, of Milton, prepares to begin her first 10km competitive walk. PHOTOS: RICHARD DAVISON : Rec centre marks 10 years with half-marathon

Sisters Vicki Dewar, of Mosgiel (left), and Bronwyn Anderson, of Portobello, keep warm inside before their 10km walk. : Rec centre marks 10 years with half-marathon

Dunedin friends Jacquie Tohill (left) and Rachel van Gorp prepare for the 10km walk. : Rec centre marks 10 years with half-marathon

Gore’s "Team Sloth", Suzanne McConnell (left) and Donna McBeath, take it easy before the 10km walk. : Rec centre marks 10 years with half-marathon

Mark Geddes, of Dunedin, crosses the Balclutha Bridge during his 10km Cross Recreation Centre run on Saturday. : Rec centre marks 10 years with half-marathon