| Olgiate Olona to Smolyan | 837.60 mi (1,347.98 km) |
| Olgiate Olona to Sofia | 742.96 mi (1,195.68 km) |
| Olgiate Olona to Sopot | 811.76 mi (1,306.40 km) |
| Olgiate Olona to Sozopol | 958.44 mi (1,542.46 km) |
| Olgiate Olona to Sredets | 936.05 mi (1,506.43 km) |
| Olgiate Olona to Stamboliyski | 814.46 mi (1,310.75 km) |
| Olgiate Olona to Stara Zagora | 859.92 mi (1,383.91 km) |
| Olgiate Olona to Svilengrad | 903.23 mi (1,453.60 km) |
| Olgiate Olona to Svishtov | 820.13 mi (1,319.87 km) |
| Olgiate Olona to Targovishte | 886.61 mi (1,426.87 km) |
| Olgiate Olona to Teteven | 782.48 mi (1,259.28 km) |
| Olgiate Olona to Troyan | 804.75 mi (1,295.13 km) |
| Olgiate Olona to Tryavna | 842.64 mi (1,356.09 km) |
| Olgiate Olona to Tutrakan | 873.81 mi (1,406.27 km) |
| Olgiate Olona to Varna | 951.55 mi (1,531.38 km) |
