There’s a lot of trail building gone on there over the past few years with some great new downhills and, more recently, some nice bits of singletrack joining them up. A lot of it is work in progress but the “Eastridge Trail Partnership” have regular dig days. The old tracks are still there, except for where felling has trashed them. I think the waymarked brown route follows a lot of the old Nationals course.
I love the place but don’t ride there as often as I could/should. Heading there tonight actually – it’s great in the dark too 🙂
As speshpaul says, it’s a tough place to ride, never mind race. Especially given the relatively small height gain. You’re always cllimbing or descending with very little let up.