When I first read this, I thought they were talking about the drug Rogaine, used to grow hair. No, this is rogaining – orienteering – and they are running a course in August in Custer State Park in South Dakota. Here’s their website.
You can participate in a 4 hour competition, a 12 hour, or, the very popular, 24 hour competition.
Here’s a story of the event in 2010 also held at Custer.