| Oslo to Smolyan | 1,399.22 mi (2,251.83 km) |
| Oslo to Sofia | 1,302.63 mi (2,096.38 km) |
| Oslo to Sopot | 1,331.34 mi (2,142.58 km) |
| Oslo to Sozopol | 1,405.47 mi (2,261.88 km) |
| Oslo to Sredets | 1,399.06 mi (2,251.56 km) |
| Oslo to Stamboliyski | 1,360.63 mi (2,189.73 km) |
| Oslo to Stara Zagora | 1,362.40 mi (2,192.58 km) |
| Oslo to Svilengrad | 1,415.74 mi (2,278.41 km) |
| Oslo to Svishtov | 1,281.20 mi (2,061.90 km) |
| Oslo to Targovishte | 1,329.51 mi (2,139.64 km) |
| Oslo to Teteven | 1,305.24 mi (2,100.58 km) |
| Oslo to Troyan | 1,315.74 mi (2,117.47 km) |
| Oslo to Tryavna | 1,331.82 mi (2,143.36 km) |
| Oslo to Tutrakan | 1,280.14 mi (2,060.19 km) |
| Oslo to Varna | 1,360.29 mi (2,189.17 km) |
