Matagouri, swamps, bluffs and making lasagne without tomatoes are just some of the challenges competitors will face at Twalk this weekend.
Twalk is an annual 24-hour orienteering event run by the Canterbury University Tramping Club. Competitors are invited to dress up - if only to protect their legs from being ripped to shreds as they negotiate rugged terrain.
Auckland University Tramping Club captain Matthew Battley says: "I'm looking forward to the incredible scenery you get to immerse yourself in as you explore the Canterbury high country".
The event is split into five legs - each 15-25km long and has 10-20 controls (cards hidden around the course).
Competitors are given clues to indicate the location of the controls on a map.