Nice road out of Annecy, more or less any side road taken from here is also nice.
The A75 is (if there is such a thing), a motorcyclists motorway. Corner after corner of high speed open dual carriageway on very good quality motorway style surface. This section also offers easy access to the Gorges du Tarn and Viaduc du Garabit. The marked end point for this route is just before the peage section, but if you continue after that, it takes you over the spectacular and massive new Viaduc du Millau. Ridden at Dusk on a Saturday in June was excellent, no traffic to speak of
From Axat the road passes through some spectacular gorges then follows the bottom of the valley with tight right hand bends and fairly open left hand bends, the surface is fairly bumpy so if ridden quickly makes it quite challenging. Keep an eye open for a petrol station on the left after about 20kms it is also a restaurant and trout farm, you can either fish your own trout or catch one in a net, either way 8 minutes later it is on your plate cooked! the corn fed chicken and chips is also excellent. About 10 k later you start to go seriously uphill and the roads eventually open out and you end up near the ski slopes. Make sure you stop opposite mont louis airfield the view of the canigou and the pyrenees is breathtaking. See video for more of an idea.
The legendary Stelvio pass, an unbelievable selection of switchbacks on the Italian side of the Swiss border that has to be seen to be believed. It's almost always very busy and so is hard to get a clear run, but this is definitely a 'must do' for all bikers at least once.
Not a brilliant riding road, too tight and twisty, but the scenery is outstanding. Take the D907 that rund diagonally between millau and Mende, it's signposted Gorge du Tarn at the Mende end. Take your time to admire the views, have a raft ride down the rapids and take in the stunning new bridge at Millau.