The longest place name consists of 86 letters!

Taumatawhakatangi­hangakoauauotamatea­turipukakapikimaunga­horonukupokaiwhen­uakitanatahu is a hill in New Zealand. The height of the hill is 305 metres. The hill is notable primarily for its unusually long name, which is of Maori origin; it is often shortened to Taumata for brevity. It is the longest place name!

The name “Taumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenuakitanatahu” translates roughly as “The summit where Tamatea, the man with the big knees, the slider, climber of mountains, the land-swallower who travelled about, played his flute to his loved one”