| Fort Smith to Opwijk | 4,705.10 mi (7,572.13 km) |
| Fort Smith to Ostend | 4,648.49 mi (7,481.02 km) |
| Fort Smith to Oud-Heverlee | 4,727.96 mi (7,608.92 km) |
| Fort Smith to Oud-Turnhout | 4,723.16 mi (7,601.20 km) |
| Fort Smith to Oudenaarde | 4,686.94 mi (7,542.90 km) |
| Fort Smith to Oudenburg | 4,652.96 mi (7,488.22 km) |
| Fort Smith to Oupeye | 4,769.15 mi (7,675.21 km) |
| Fort Smith to Overijse | 4,724.64 mi (7,603.57 km) |
| Fort Smith to Overpelt | 4,742.83 mi (7,632.85 km) |
| Fort Smith to Paal | 4,739.89 mi (7,628.11 km) |
| Fort Smith to Peer | 4,747.14 mi (7,639.79 km) |
| Fort Smith to Pepinster | 4,780.69 mi (7,693.78 km) |
| Fort Smith to Peruwelz | 4,697.58 mi (7,560.03 km) |
| Fort Smith to Perwez | 4,740.82 mi (7,629.61 km) |
| Fort Smith to Philippeville | 4,745.44 mi (7,637.04 km) |
