| Os to Zottegem | 649.98 mi (1,046.04 km) |
| Os to Zulte | 648.12 mi (1,043.05 km) |
| Os to Zwevegem | 656.62 mi (1,056.72 km) |
| Os to Zwijndrecht | 624.11 mi (1,004.40 km) |
| Os to Asenovgrad | 1,500.86 mi (2,415.40 km) |
| Os to Aytos | 1,516.30 mi (2,440.25 km) |
| Os to Balchik | 1,496.26 mi (2,408.00 km) |
| Os to Bankya | 1,419.68 mi (2,284.76 km) |
| Os to Bansko | 1,481.29 mi (2,383.91 km) |
| Os to Berkovitsa | 1,386.12 mi (2,230.75 km) |
| Os to Blagoevgrad | 1,461.83 mi (2,352.59 km) |
| Os to Botevgrad | 1,421.42 mi (2,287.55 km) |
| Os to Burgas | 1,533.66 mi (2,468.19 km) |
| Os to Byala Slatina | 1,390.08 mi (2,237.12 km) |
| Os to Chirpan | 1,500.14 mi (2,414.23 km) |
