Dent's first ascents in the Alps include the Lenzspitze (4,294 m) in the Pennine Alps in August 1870, with Alexander Burgener and a porter, Franz Burgener (of whom Dent wrote 'his conversational powers were limited by an odd practice of carrying heavy parcels in his mouth'), and the Portjengrat (Pizzo d'Andollo, 3,654 m) above the valley of Saas-Fee in 1871. On 5 September 1872 the combined parties of Dent and guide Alexander Burgener, with George Augustus Passingham, and his guides Ferdinand Imseng and Franz Andermatten, made the first ascent of the south-east ridge of the Zinalrothorn (4,221 m); this is the current voie normale on the mountain.