But the clues themselves are often cryptic as Battley recalls: "The CUTC team show a great sense of humour with the clues, keeping the teams in high spirits even when navigating through a misty swamp at 3am."
Centre of operations is the "Hash House", where volunteers ensure hot food is always available and there is fresh water, tent space, music, socialising and a live scoreboard.
Competitors must spend at least 30 minutes at the Hash House before they can take off on a subsequent leg of the course.
With 300 hungry people competing around the clock, the cooks often have to be creative when they start running out of essential ingredients such as tomatoes for lasagne, or muffins without eggs.
Four AUTC teams will compete at Twalk this weekend and Battley is delighted.
"The teams are mainly from Christchurch or Otago so it's nice to take down a competitive Auckland contingent," he says.
"There is nothing quite like seeing the sun rise again after running/regaining through the entire night."
Twalk15
What: 24-hour orienteering event
When: Today/tomorrow
Where: Canterbury
For more information click here.