I've finally got permission for a big, month long tour next summer and am so over excited I'm like a kid on Christmas Eve. So...I've started planning already, and have a stretch of the route I need some help on. How can I get from Aix en Provence to Interlaken? I was planning to go up through the mountains to Grenoble and then across...but that looks like murder on the gradients front. And then I thought about going from Aix via Orange and Dijon area across to Bern and down to Interlaken. Any thoughts? As background, we do about 50 miles per day average (could do 60 if needed) and aren't afraid of hills but have never done proper mountains (although we'd try if we needed to).