The terrain from today’s JWOC long distance looks very challenging with very stony ground. As you can see from the winner Olav Lundanes’ route choice (excerpt from the first part of the course to the right), the trick was to avoid the stony areas as much as possible, and only visit them just around the controls if possible.
This map sample is taken from the official JWOC page. You find all of the course, including winners route choices here:
Below: The tricky last part where Lundanes was really impressive – and increased his lead from seconds to minutes: