| McCalla to Opwijk | 4,522.76 mi (7,278.68 km) |
| McCalla to Ostend | 4,465.26 mi (7,186.15 km) |
| McCalla to Oud-Heverlee | 4,545.75 mi (7,315.68 km) |
| McCalla to Oud-Turnhout | 4,544.93 mi (7,314.37 km) |
| McCalla to Oudenaarde | 4,502.55 mi (7,246.15 km) |
| McCalla to Oudenburg | 4,469.61 mi (7,193.14 km) |
| McCalla to Oupeye | 4,588.24 mi (7,384.06 km) |
| McCalla to Overijse | 4,541.80 mi (7,309.32 km) |
| McCalla to Overpelt | 4,564.87 mi (7,346.44 km) |
| McCalla to Paal | 4,560.18 mi (7,338.90 km) |
| McCalla to Peer | 4,568.69 mi (7,352.59 km) |
| McCalla to Pepinster | 4,599.21 mi (7,401.72 km) |
| McCalla to Peruwelz | 4,510.88 mi (7,259.56 km) |
| McCalla to Perwez | 4,557.51 mi (7,334.60 km) |
| McCalla to Philippeville | 4,558.68 mi (7,336.49 km) |
