From the Reservoirs of the Fontaine Bonnet on the St Nazaire -> St Hilaire road follow the Chemin de la Communeaux unsurfaced road downhill for a couple of hundred meters.

From the reservoirs follow the broken tarmac road towards the Tour d'Arces. The track is very steep, around 15%. Continue past the tower and continue to the Pierre Grosse.

No Name: From St Ismier climb to the Tour d'Arces (medieval watch tower) then take the Pierre Grosse trail. After the Pierre Grosse the "No Name" is on the left.

There are four routes up the Col de la Madeleine on the south sideThe normal route from la Chambre - 19.5km with some 40 wide hairpins.

Follow the Pierre Grosse trail. At the end of the 33 hairpins take the right fork rather than crossing the torrent on the left. After about 20 meters of descent cross the Corbonne stream.

42 minutes for the whole Col, that's a VAM of 959, 17m15 for the part Theys -> Col des Ayes for a VAM of 1043. I obviously took the first part of the climb easy leaving it for the second section.

Afternoon ride from home to tackled the famous Pierre Grosse singletrack. It consists of 33 very quick and short switchbacks but relatively easy. See map for other trails used.

From the Massons car-park follow the signs to the "La tour d'Arces" then "Pierre Grosse"; carry on past the Pierre Grosse on the left to the end of the trail.

Les monts d'Or is a small range of hills to the north east of Lyon about 15km long.  The high point is Mont Verdun at 626m.

Climb via the road, 55 minutes on an MTB, descent via the trails from the Col du Lauteret, rode through village via Mt Fallet track then back to la Roare.