| Ano Syros to Oegstgeest | 1,418.44 mi (2,282.76 km) |
| Ano Syros to Oirschot | 1,361.39 mi (2,190.95 km) |
| Ano Syros to Oisterwijk | 1,368.32 mi (2,202.09 km) |
| Ano Syros to Oldebroek | 1,383.33 mi (2,226.26 km) |
| Ano Syros to Oldenzaal | 1,344.72 mi (2,164.12 km) |
| Ano Syros to Ommen | 1,370.12 mi (2,204.99 km) |
| Ano Syros to Oosterend | 1,403.58 mi (2,258.85 km) |
| Ano Syros to Oosterhout | 1,382.50 mi (2,224.93 km) |
| Ano Syros to Oosterwolde | 1,396.07 mi (2,246.77 km) |
| Ano Syros to Oostzaan | 1,415.39 mi (2,277.84 km) |
| Ano Syros to Opmeer | 1,424.92 mi (2,293.18 km) |
| Ano Syros to Oss | 1,365.53 mi (2,197.61 km) |
| Ano Syros to Oud-Beijerland | 1,405.33 mi (2,261.67 km) |
| Ano Syros to Oudenbosch | 1,391.68 mi (2,239.69 km) |
| Ano Syros to Oudewater | 1,397.97 mi (2,249.82 km) |
