| Calafat to Nuth | 927.16 mi (1,492.11 km) |
| Calafat to Oegstgeest | 1,019.73 mi (1,641.09 km) |
| Calafat to Oirschot | 967.07 mi (1,556.35 km) |
| Calafat to Oisterwijk | 973.43 mi (1,566.59 km) |
| Calafat to Oldebroek | 975.09 mi (1,569.25 km) |
| Calafat to Oldenzaal | 932.96 mi (1,501.45 km) |
| Calafat to Ommen | 958.74 mi (1,542.95 km) |
| Calafat to Oosterend | 988.92 mi (1,591.51 km) |
| Calafat to Oosterhout | 988.50 mi (1,590.84 km) |
| Calafat to Oosterwolde | 980.53 mi (1,578.01 km) |
| Calafat to Oostzaan | 1,011.97 mi (1,628.61 km) |
| Calafat to Opmeer | 1,018.31 mi (1,638.81 km) |
| Calafat to Oss | 966.87 mi (1,556.03 km) |
| Calafat to Oud-Beijerland | 1,011.30 mi (1,627.52 km) |
| Calafat to Oudenbosch | 999.90 mi (1,609.19 km) |
