| Humacao to Opwijk | 4,385.49 mi (7,057.76 km) |
| Humacao to Ostend | 4,332.09 mi (6,971.83 km) |
| Humacao to Oud-Heverlee | 4,405.97 mi (7,090.72 km) |
| Humacao to Oud-Turnhout | 4,421.53 mi (7,115.76 km) |
| Humacao to Oudenaarde | 4,359.59 mi (7,016.09 km) |
| Humacao to Oudenburg | 4,335.33 mi (6,977.04 km) |
| Humacao to Oupeye | 4,448.17 mi (7,158.64 km) |
| Humacao to Overijse | 4,399.96 mi (7,081.06 km) |
| Humacao to Overpelt | 4,439.88 mi (7,145.30 km) |
| Humacao to Paal | 4,428.72 mi (7,127.34 km) |
| Humacao to Peer | 4,441.21 mi (7,147.43 km) |
| Humacao to Pepinster | 4,455.40 mi (7,170.27 km) |
| Humacao to Peruwelz | 4,357.29 mi (7,012.37 km) |
| Humacao to Perwez | 4,411.68 mi (7,099.91 km) |
| Humacao to Philippeville | 4,398.53 mi (7,078.75 km) |
