| Romilly-sur-Seine to Smolyan | 1,125.42 mi (1,811.19 km) |
| Romilly-sur-Seine to Sofia | 1,025.48 mi (1,650.35 km) |
| Romilly-sur-Seine to Sopot | 1,090.00 mi (1,754.19 km) |
| Romilly-sur-Seine to Sozopol | 1,229.55 mi (1,978.77 km) |
| Romilly-sur-Seine to Sredets | 1,209.32 mi (1,946.21 km) |
| Romilly-sur-Seine to Stamboliyski | 1,098.23 mi (1,767.43 km) |
| Romilly-sur-Seine to Stara Zagora | 1,137.31 mi (1,830.33 km) |
| Romilly-sur-Seine to Svilengrad | 1,184.77 mi (1,906.70 km) |
| Romilly-sur-Seine to Svishtov | 1,086.14 mi (1,747.97 km) |
| Romilly-sur-Seine to Targovishte | 1,152.86 mi (1,855.35 km) |
| Romilly-sur-Seine to Teteven | 1,059.65 mi (1,705.35 km) |
| Romilly-sur-Seine to Troyan | 1,080.78 mi (1,739.35 km) |
| Romilly-sur-Seine to Tryavna | 1,116.28 mi (1,796.48 km) |
| Romilly-sur-Seine to Tutrakan | 1,130.90 mi (1,820.01 km) |
| Romilly-sur-Seine to Varna | 1,214.13 mi (1,953.95 km) |
