Frendo Spur

This is the classic normal route on Mont Blanc and the most frequently climbed line. It is a high-altitude snow and mixed route with a long approach and a sustained summit day. The main objective hazard is the Grand Couloir below the Aiguille du Goûter, which is notorious for rockfall. Above the Goûter Hut the route follows snow slopes and the Bosses Ridge, where altitude, wind, and cold are the main difficulties. In stable conditions it is technically moderate, but it remains a serious alpine ascent because of exposure, weather, and objective hazards. It is commonly climbed with an overnight at Tête Rousse or Goûter Hut.

This is a classic high alpine traverse linking the three Mont Blanc summits: Tacul, Maudit, and Mont Blanc. It is more serious than the normal route because it includes crevasse travel, steep snow, and exposed sections on the upper mountain. The route is strongly dependent on conditions and requires efficient glacier travel and route-finding. The Mont Maudit section is often the crux, with steep snow and potential avalanche or serac exposure. It is a major objective in the Mont Blanc massif and is well documented in guidebooks. Parties commonly use the Aiguille du Midi access and then continue to the summit of Mont Blanc before descending by a normal route.

The Brenva Spur is one of the great classic alpine routes on Mont Blanc and is much more serious than the normal routes. It climbs the imposing south-east side of the mountain and is known for steep snow, ice, and mixed climbing. Conditions on the route vary greatly, and objective hazards such as serac fall, rockfall, and avalanche danger are significant. It is a long, committing line that demands strong alpine skills and good acclimatization. The route is historically important and widely documented in major alpine literature. It is generally considered a major mountaineering objective rather than a standard summit route.

The Innominata Ridge is a major classic ridge route on the south side of Mont Blanc. It is a long and serious mixed climb with sustained exposure and complex route-finding. The line is more technical and committing than the normal routes, and conditions can change the difficulty substantially. Objective hazards include rockfall, snow instability, and crevasse travel on the approach. It is a well-documented alpine route and a respected objective for experienced teams. The route typically requires good weather and strong acclimatization.