Arnun is about 65 km south of Beirut and 15 km east of the coastal city of Sidon (Saida). The drive from Beirut takes around 90 minutes via the coastal highway south to Sidon, then inland on the road to Nabatieh. There is no passenger rail in southern Lebanon.
Service taxis and buses from Beirut's Cola Bridge transport hub head south to Sidon and Nabatieh, from which local taxis can continue to Arnun. Renting a car is significantly more convenient for exploring this area. Check security conditions and consult current travel advisories before visiting southern Lebanon, as the region has been affected by conflict.