| Ptolemaida to Oegstgeest | 1,145.11 mi (1,842.87 km) |
| Ptolemaida to Oirschot | 1,088.05 mi (1,751.04 km) |
| Ptolemaida to Oisterwijk | 1,094.97 mi (1,762.18 km) |
| Ptolemaida to Oldebroek | 1,110.38 mi (1,786.98 km) |
| Ptolemaida to Oldenzaal | 1,072.09 mi (1,725.37 km) |
| Ptolemaida to Ommen | 1,097.41 mi (1,766.11 km) |
| Ptolemaida to Oosterend | 1,131.12 mi (1,820.36 km) |
| Ptolemaida to Oosterhout | 1,109.16 mi (1,785.02 km) |
| Ptolemaida to Oosterwolde | 1,123.72 mi (1,808.45 km) |
| Ptolemaida to Oostzaan | 1,142.16 mi (1,838.14 km) |
| Ptolemaida to Opmeer | 1,151.82 mi (1,853.68 km) |
| Ptolemaida to Oss | 1,092.21 mi (1,757.74 km) |
| Ptolemaida to Oud-Beijerland | 1,131.99 mi (1,821.76 km) |
| Ptolemaida to Oudenbosch | 1,118.36 mi (1,799.82 km) |
| Ptolemaida to Oudewater | 1,124.64 mi (1,809.94 km) |
