Domnarski Farm XC is an old timey mountain bikey course. I only suppose this is so, since I've been racing mtb for 6 years. The guys I train with used to race mtb "back in the day" on narrow long loops of mixed dirt road/jeep trail/single track courses that sound just like this one. So I imagine this course appeals to racers who fondly remember Onza pedals, Suntour XC group, and Oakley pilots.
P.S. Thank you to Matt Domnarski and his family for putting on a mountain bike race at their beautiful farm. Worth the trip.