Teering race (Sprint Series) 30:36 4.72 km (6:29 / km) +75m6:00 / km ahr:137 max:161
UNSW, Kensington. So I've been doing Sprint distance since the format started and this one is the longest time and equal longest distance I've spent on a sprint. Previously the longest were the Abbottsford sprints in 2014 - 24:50/4.73km and 2013 - 26:18/4.68km. They were too long too; the next longest was at Macquarie Uni NOL in 2010 - that was "only" 4.57km, but took me just 21:27 - no steps.
World Class Orienteers (e.g. Thierry Georgiu) would at their very best on flat courses run at 3:30 per km. So to get a winning time of 13.5 minutes ("between 12 and 15") the maximum distance set should be LESS THAN 3.8km. To get within 15 minutes Thierry can only have 4.2km. Not 4.7 and not with steps.
A first time setter needs some expert guidance. Like only using the running level to put flags on would be a good start - or the basic concept that orienteering is about the legs, not hunting within the circle for the flag.