| Oudewater to Smolyan | 1,176.54 mi (1,893.45 km) |
| Oudewater to Sofia | 1,072.47 mi (1,725.97 km) |
| Oudewater to Sopot | 1,127.94 mi (1,815.25 km) |
| Oudewater to Sozopol | 1,252.16 mi (2,015.16 km) |
| Oudewater to Sredets | 1,235.62 mi (1,988.53 km) |
| Oudewater to Stamboliyski | 1,143.99 mi (1,841.07 km) |
| Oudewater to Stara Zagora | 1,172.11 mi (1,886.33 km) |
| Oudewater to Svilengrad | 1,223.91 mi (1,969.69 km) |
| Oudewater to Svishtov | 1,107.79 mi (1,782.81 km) |
| Oudewater to Targovishte | 1,171.91 mi (1,886.01 km) |
| Oudewater to Teteven | 1,097.39 mi (1,766.08 km) |
| Oudewater to Troyan | 1,115.98 mi (1,796.00 km) |
| Oudewater to Tryavna | 1,146.68 mi (1,845.40 km) |
| Oudewater to Tutrakan | 1,139.49 mi (1,833.83 km) |
| Oudewater to Varna | 1,226.08 mi (1,973.18 km) |
