Le Grand Roc, Semnoz.
Slowroute!
Idea was to do 3/4 of the WC long from 2010. Heading to the start, I realised I'd left my compass in the car. Not sure if it was that or just general poor navigation, but I failed miserably in the map-reading department.
Mistakes on all the first 5 controls. A couple of times I though I was navigating into the control nicely only to be elsewhere. 6 through 9 went better, but by that stage I was done.