Cycling to the Vallée de Joux

Yesterday I tried cycling to the Vallée de Joux and succeeded. A few weeks ago I cycled up to St George and I saw a sign that said that the Col De Marchairuz was less than 6km away so I decided to try it. When I succeeded that I saw that getting to the Vallée de Joux would be possible.
On Sunday due to the weather I thought that I would go for a small 30km loop to avoid the bad weather and rain. I felt fresh when I got back to Nyon so I decided to go further and I headed towards the Col De Mollendruz but took a wrong turn and arrived in Bière. As I felt tired I changed course and headed back for home.