| Karnobat to Oegstgeest | 1,234.71 mi (1,987.07 km) |
| Karnobat to Oirschot | 1,183.52 mi (1,904.69 km) |
| Karnobat to Oisterwijk | 1,189.70 mi (1,914.64 km) |
| Karnobat to Oldebroek | 1,187.54 mi (1,911.16 km) |
| Karnobat to Oldenzaal | 1,144.55 mi (1,841.97 km) |
| Karnobat to Ommen | 1,170.24 mi (1,883.33 km) |
| Karnobat to Oosterend | 1,198.92 mi (1,929.48 km) |
| Karnobat to Oosterhout | 1,204.88 mi (1,939.07 km) |
| Karnobat to Oosterwolde | 1,190.26 mi (1,915.54 km) |
| Karnobat to Oostzaan | 1,225.67 mi (1,972.52 km) |
| Karnobat to Opmeer | 1,230.96 mi (1,981.04 km) |
| Karnobat to Oss | 1,182.24 mi (1,902.63 km) |
| Karnobat to Oud-Beijerland | 1,227.52 mi (1,975.51 km) |
| Karnobat to Oudenbosch | 1,216.73 mi (1,958.13 km) |
| Karnobat to Oudewater | 1,214.56 mi (1,954.64 km) |
