| Caldwell to Opwijk | 5,001.87 mi (8,049.73 km) |
| Caldwell to Ostend | 4,952.32 mi (7,969.99 km) |
| Caldwell to Oud-Heverlee | 5,022.56 mi (8,083.03 km) |
| Caldwell to Oud-Turnhout | 5,005.97 mi (8,056.34 km) |
| Caldwell to Oudenaarde | 4,991.34 mi (8,032.79 km) |
| Caldwell to Oudenburg | 4,956.83 mi (7,977.25 km) |
| Caldwell to Oupeye | 5,056.61 mi (8,137.83 km) |
| Caldwell to Overijse | 5,021.41 mi (8,081.19 km) |
| Caldwell to Overpelt | 5,023.33 mi (8,084.27 km) |
| Caldwell to Paal | 5,025.92 mi (8,088.44 km) |
| Caldwell to Peer | 5,028.80 mi (8,093.07 km) |
| Caldwell to Pepinster | 5,069.00 mi (8,157.77 km) |
| Caldwell to Peruwelz | 5,008.25 mi (8,059.99 km) |
| Caldwell to Perwez | 5,037.78 mi (8,107.52 km) |
| Caldwell to Philippeville | 5,052.60 mi (8,131.37 km) |
