Sounds fun! Here in Halden, Norway we are known for orienteering. It is even done at school. As a pensioner I isually trailrun in the daytime and I often come across groups of schoolchildren stumbling around the woods :j At work, a world-class orienteer was just across the corridor from me. I once saw him doing treadmill intervals and I was forever impressed at how much skill and effort goes into being a good orienteer.