Just Plain Tough
I ran the Plain 100. It was difficult. Plain may be the first 100-miler I had ever heard of in the sense that I actually knew anyone who ran it. My ultra/grad school mentor ZG ran it back in '04 or '05 and not only did he win it, he was the first person to finish it in several years. Plain runs quite a bit under the radar due to its length (108 miles) and absence of any course markings or aid stations. That's right, no aid stations, and no course markings. Less than a month after running a 24-hour rogaine that has the same conditions, that might not seem like a huge deal, but compared to standard hundred mile races, it is. Also note that in my rogaine, I covered a whopping 44 miles without aid or course markings. The other major issue with Plain is that it a very high percentage of the course is on motorbike trails. Motorbike trails are unpleasant to run on for several reasons: Pavement. To prevent erosion, trail maintainers lay concrete paving stones. So you're b...