daljina

1. distance
   Kolika je daljina od Beograda do Novog Sada? — What's the distance from Belgrade to Novi Sad?
   Osvojila je medalju u skoku u daljinu. — She won a medal in the long jump.
2. the distance; faraway place
   U daljini se vide planine. — You can see mountains in the distance.
   Dugo je ćutao i gledao u daljinu. — He was silent for a long time, staring into the distance.
3. (in na daljinu) remotely; long-distance
   Radim na daljinu već dve godine. — I've been working remotely for two years.
   Veza na daljinu nije laka. — A long-distance relationship isn't easy.

For the distance between two specific points, udaljenost or razdaljina are often used.