We had a terrific opportunity today! Margus Hallik of Estonia, one of the world's top mountain bike orienteers (4th place in the World Champs), put on an instructional clinic at our place for interested orienteers. His friends in Europe want to race in Canada in future, so they told him that they wanted him to help get the sport started here. (His wife Kati is here on a diplomatic assignment which is wrapping up shortly.)
He explained the different trail markings that are used in MTB-O vs. regular orienteering. They provide information about the trail width and rideability.
He brought a number of maps from events that he has done. Some of the trail networks are really intricate, and racers have to read their maps at top speed while watching for ruts, roots and rocks.
Top MTB orienteers are skilled at determining the shortest route between two points on a trail network. Margus explained that people often experience optical illusions when estimating the relative lengths of different trail routes. We need to work on our geometry skills!
Unfortunately, I had to head out of town before the training ride, but I'm told that it was amazing to watch Margus riding at full speed on twisty singletrack while staying fully in contact with the map.