| Ilioupoli to Oegstgeest | 1,353.73 mi (2,178.62 km) |
| Ilioupoli to Oirschot | 1,296.36 mi (2,086.28 km) |
| Ilioupoli to Oisterwijk | 1,303.32 mi (2,097.49 km) |
| Ilioupoli to Oldebroek | 1,319.85 mi (2,124.09 km) |
| Ilioupoli to Oldenzaal | 1,281.81 mi (2,062.87 km) |
| Ilioupoli to Ommen | 1,307.08 mi (2,103.54 km) |
| Ilioupoli to Oosterend | 1,340.91 mi (2,157.99 km) |
| Ilioupoli to Oosterhout | 1,317.38 mi (2,120.12 km) |
| Ilioupoli to Oosterwolde | 1,333.55 mi (2,146.14 km) |
| Ilioupoli to Oostzaan | 1,351.22 mi (2,174.58 km) |
| Ilioupoli to Opmeer | 1,361.12 mi (2,190.51 km) |
| Ilioupoli to Oss | 1,300.95 mi (2,093.67 km) |
| Ilioupoli to Oud-Beijerland | 1,340.16 mi (2,156.77 km) |
| Ilioupoli to Oudenbosch | 1,326.30 mi (2,134.48 km) |
| Ilioupoli to Oudewater | 1,333.30 mi (2,145.74 km) |
