The DSG is the Dirt, Sweat & Gears. It's a 12-hour mountain bike race held each May in Fayetteville. It's a huge event with more in "door" prizes than purse money. But the pro's and personalities come out as well. (I think I wrote about this in the newsletter)
The website is dirtsweatandgears.com and there's a whole section of nationalmountainbike.com for DSG.
Race 12 hours solo, or on a team. Good clean fun, except for the dirt mud sweat and beers.
The course in a 10.6 mile loop with 1600' or so of climbing per lap. It is private and only open on certain dates.