Grass Track Road at Muriwai sets the tone: map in hand, forest tracks ahead, and enough off-track terrain to make you think before you move. The Bivouac Outdoor Rogaine Series – Event 3 is a "navigation-based endurance event," so the point is not just running hard but working out how to "locate checkpoints within a set time" without wasting legs or minutes.
The course is built around "route choice and navigation strategy," with "accessible track-based controls" for newer rogainers and "technical off-track options" for people who like a proper bush puzzle. Individuals and teams both fit in, and beginners get coaching before maps are released, while experienced navigators can spend the planning window chasing a cleaner line. Expect a mass start, penalties if you drift back late, and a finish that rewards calm decisions as much as speed.