| Calexico to Opwijk | 5,594.14 mi (9,002.90 km) |
| Calexico to Ostend | 5,541.31 mi (8,917.88 km) |
| Calexico to Oud-Heverlee | 5,615.91 mi (9,037.93 km) |
| Calexico to Oud-Turnhout | 5,603.38 mi (9,017.76 km) |
| Calexico to Oudenaarde | 5,580.66 mi (8,981.21 km) |
| Calexico to Oudenburg | 5,545.87 mi (8,925.22 km) |
| Calexico to Oupeye | 5,653.03 mi (9,097.67 km) |
| Calexico to Overijse | 5,613.96 mi (9,034.79 km) |
| Calexico to Overpelt | 5,621.80 mi (9,047.41 km) |
| Calexico to Paal | 5,622.43 mi (9,048.43 km) |
| Calexico to Peer | 5,626.93 mi (9,055.67 km) |
| Calexico to Pepinster | 5,665.27 mi (9,117.38 km) |
| Calexico to Peruwelz | 5,595.48 mi (9,005.06 km) |
| Calexico to Perwez | 5,630.47 mi (9,061.37 km) |
| Calexico to Philippeville | 5,641.74 mi (9,079.51 km) |
