| Cave Spring to Opwijk | 4,050.43 mi (6,518.53 km) |
| Cave Spring to Ostend | 3,992.83 mi (6,425.85 km) |
| Cave Spring to Oud-Heverlee | 4,073.41 mi (6,555.52 km) |
| Cave Spring to Oud-Turnhout | 4,073.49 mi (6,555.65 km) |
| Cave Spring to Oudenaarde | 4,029.81 mi (6,485.35 km) |
| Cave Spring to Oudenburg | 3,997.14 mi (6,432.78 km) |
| Cave Spring to Oupeye | 4,116.12 mi (6,624.25 km) |
| Cave Spring to Overijse | 4,069.33 mi (6,548.95 km) |
| Cave Spring to Overpelt | 4,093.45 mi (6,587.76 km) |
| Cave Spring to Paal | 4,088.37 mi (6,579.60 km) |
| Cave Spring to Peer | 4,097.15 mi (6,593.72 km) |
| Cave Spring to Pepinster | 4,126.95 mi (6,641.68 km) |
| Cave Spring to Peruwelz | 4,037.64 mi (6,497.95 km) |
| Cave Spring to Perwez | 4,084.91 mi (6,574.03 km) |
| Cave Spring to Philippeville | 4,085.36 mi (6,574.74 km) |
