
The first time I rode the SDW, I met an old boy who used to do those runs until he turned 60 and decided he was getting to old for that sort of thing so took up mountain biking! He was about twice my age and about twice as fast as me - scary!
Still, 9 hours for riding the SDW in the dark on a slippery night in October is impressive. Under those conditions you can't make up as much time on the downhills as you usually would expect to on a bike.
Even more impressive (kinda) was Mike from Cannondale who finished fastest in 8.5 hours and would have been considerably faster than that if he hadn't got lost every 30 or 40 yards... ;-)