Most orienteers are familiar with this; many adventure racers are not. The Route to Christmas started today - a holiday tradition that provides some seasonal navigation fun!
Each day until Dec. 25, an interesting course leg will be posted. First you can choose your own route. If you want, you can draw it using the tool supplied and add comments to share with others working on the challenge.
Then you can read on to learn which route worked best and why, and check the map to see other proposed routes. I always learn something!