Here are the fall rally tracks for the 4 rides I was leading.
Friday Morning C Loop is an easy loop that includes the 655/157 trails, Flag Mountain lookout, and the 129 overlook. 46.8 miles, 3:45 hours, average 12 mph.
Friday Afternoon B Loop includes the infamous mud crossing and the Bear Mountain climb. 39.3 miles, 2:53 hours, 14 mph average. Just in case any greenies are reading, the mud crossing was on a legal trail; the trail marker is clearly visible in Hank's video.
Saturday Morning B Loop includes the Bear Mountain climb, Jasper trails, and part of the powerline trail. It was really hot Saturday (90+ degrees) so we bailed a little early on the ride. 70.6 miles, 4:00 hours, 18 mph average. This is a fun loop to ride at a faster pace; your suspension and your body will get a workout.
Saturday Afternoon C Loop includes 242/241 (fun trails with some whoops), 245 (dustiest trail in the entire Black Hills

), and the 6809 trail. 6809 has a 1-mile climb through a narrow canyon. An easy ride even for big bikes but a really fun trail; several who rode it said it was their favorite trail of the fall rally. There's an absolutely awesome view at the end of trail 6807. 47.3 miles, 2:59 hours, 16 mph average.