Mont Mallet was first climbed on 4th September 1871. The first ascension party consisted of Leslie Stephen, Gabriel Loppé, F. Wallroth, Melchior Anderegg, Cachet and A. Tournier. They reached it via its southern ridge, a route now graded on the French adjectival climbing scale as PD. Its north ridge (graded AD) was first climbed in 1882.