| Kazanlak to Oegstgeest | 1,174.49 mi (1,890.16 km) |
| Kazanlak to Oirschot | 1,122.01 mi (1,805.70 km) |
| Kazanlak to Oisterwijk | 1,128.35 mi (1,815.91 km) |
| Kazanlak to Oldebroek | 1,129.34 mi (1,817.50 km) |
| Kazanlak to Oldenzaal | 1,086.99 mi (1,749.34 km) |
| Kazanlak to Ommen | 1,112.76 mi (1,790.81 km) |
| Kazanlak to Oosterend | 1,142.55 mi (1,838.75 km) |
| Kazanlak to Oosterhout | 1,143.43 mi (1,840.18 km) |
| Kazanlak to Oosterwolde | 1,134.08 mi (1,825.12 km) |
| Kazanlak to Oostzaan | 1,166.50 mi (1,877.31 km) |
| Kazanlak to Opmeer | 1,172.62 mi (1,887.16 km) |
| Kazanlak to Oss | 1,121.68 mi (1,805.17 km) |
| Kazanlak to Oud-Beijerland | 1,166.22 mi (1,876.84 km) |
| Kazanlak to Oudenbosch | 1,154.87 mi (1,858.59 km) |
| Kazanlak to Oudewater | 1,154.18 mi (1,857.48 km) |
