The standard Kalevala consists of 50 runos, or cantos.
The 50-runo structure belongs to the New Kalevala, the version compiled and published by Elias Lönnrot in 1849. A runo is a traditional Finnish or Karelian song-poem; in English descriptions, the individual sections are commonly called cantos or poems. Together, they form the best-known version of Finland’s national epic.
The work was assembled from oral poetry collected in Finland, Karelia, and neighboring regions. Lönnrot edited, arranged, and connected this material into a large narrative involving creation, Väinämöinen, Aino, Ilmarinen, Louhi, Pohjola, and the magical Sampo.
The number can cause confusion because the earlier Old Kalevala, published in 1835–1836, contained 32 poems rather than 50. The 1862 school abridgment retained all 50 poems while shortening the verse. Thus, when a quiz asks how many runos the Kalevala has without specifying an edition, 50 is the conventional answer for the standard text.