Rode the Mont 24 course on the weekend. It's about 19 km long. About half is single track and the rest is fire trail. There's a 1 in 10 uphill grade at one point. Some parts are going to be a bit scary at night. The race is going to be 9 October and it looks like I'll have to ride three laps, at least one in the dark. I was knackered after just one and it was very slow, as Millhouse busted up his bike on the course.