| Apex to Nuth | 4,145.65 mi (6,671.78 km) |
| Apex to Oegstgeest | 4,058.32 mi (6,531.23 km) |
| Apex to Oirschot | 4,107.81 mi (6,610.87 km) |
| Apex to Oisterwijk | 4,101.78 mi (6,601.18 km) |
| Apex to Oldebroek | 4,109.05 mi (6,612.87 km) |
| Apex to Oldenzaal | 4,153.08 mi (6,683.74 km) |
| Apex to Ommen | 4,127.83 mi (6,643.10 km) |
| Apex to Oosterend | 4,102.45 mi (6,602.25 km) |
| Apex to Oosterhout | 4,086.54 mi (6,576.65 km) |
| Apex to Oosterwolde | 4,111.55 mi (6,616.90 km) |
| Apex to Oostzaan | 4,069.16 mi (6,548.68 km) |
| Apex to Opmeer | 4,065.66 mi (6,543.05 km) |
| Apex to Oss | 4,110.12 mi (6,614.61 km) |
| Apex to Oud-Beijerland | 4,064.08 mi (6,540.51 km) |
| Apex to Oudenbosch | 4,074.36 mi (6,557.05 km) |
