I was in Geneva last week and wanted to walk up Mount Saleve which is just over the border in France, however none of the main routes up it were mapped on OpenStreetMap.
One of my colleagues confirmed where the start of the main trail going up the North face was, and as I was itching to climb my first mountain I decided to map it whilst I was at it.
It was a long climb up the Grande Gorge trail to the top of Saleve from the trailhead at Route de Verdaz in Bossey. This was after a 2.5 mile walk from Veyrier, over the Swiss/French border and all the way to trailhead.
The climb itself is not for the faint hearted, as parts of the route are very steep, slippery and narrow. I managed it in 1 hour 40 minutes, taking it at a reasonable pace and with frequent short rests (the signpost at the trailhead says it takes 2 hours 45 minutes. I suspect that any fit person that is either a regular climber or hiker of 20 miles can do it in under 2 hours.
I think I did very well, especially as the highest I've been in the UK is only 350 metres on the South Downs.
Obviously I have now added the route to the OpenStreeMap site for all to use. If anyone wants the GPX or KML file of the trail then let me know.