Training and resources

Training for the running is essentially training to do two long fell races back-to-back. You need to be out there for 5 hours plus, sleep in a tent, and then do it all again. It's mostly about endurance.

As far as technique goes, you need to be able to ascend, descend and, perhaps worst of all, contour for long distances. However, you'll often not be moving at any speed. Most of a mountain marathon, for the non-elite runner, will involve walking. Running is best left for when you can run, occasional path sections, the easier descents, or good terrain.

What's equally as important is navigation and route choice. There are a few courses that teach the sort of navigation necessary for MMs, in addition there are a couple of books and a website that can help with preparation.