| Groves to Nuth | 5,035.01 mi (8,103.06 km) |
| Groves to Oegstgeest | 4,941.93 mi (7,953.27 km) |
| Groves to Oirschot | 4,994.47 mi (8,037.82 km) |
| Groves to Oisterwijk | 4,988.08 mi (8,027.54 km) |
| Groves to Oldebroek | 4,988.41 mi (8,028.08 km) |
| Groves to Oldenzaal | 5,031.49 mi (8,097.40 km) |
| Groves to Ommen | 5,005.83 mi (8,056.10 km) |
| Groves to Oosterend | 4,977.74 mi (8,010.90 km) |
| Groves to Oosterhout | 4,973.03 mi (8,003.32 km) |
| Groves to Oosterwolde | 4,986.54 mi (8,025.06 km) |
| Groves to Oostzaan | 4,950.40 mi (7,966.90 km) |
| Groves to Opmeer | 4,944.98 mi (7,958.18 km) |
| Groves to Oss | 4,994.69 mi (8,038.17 km) |
| Groves to Oud-Beijerland | 4,950.22 mi (7,966.61 km) |
| Groves to Oudenbosch | 4,961.77 mi (7,985.20 km) |
