| Horizon City to Opwijk | 5,334.75 mi (8,585.45 km) |
| Horizon City to Ostend | 5,279.46 mi (8,496.46 km) |
| Horizon City to Oud-Heverlee | 5,357.27 mi (8,621.69 km) |
| Horizon City to Oud-Turnhout | 5,349.04 mi (8,608.45 km) |
| Horizon City to Oudenaarde | 5,318.53 mi (8,559.34 km) |
| Horizon City to Oudenburg | 5,283.99 mi (8,503.77 km) |
| Horizon City to Oupeye | 5,396.92 mi (8,685.50 km) |
| Horizon City to Overijse | 5,354.53 mi (8,617.28 km) |
| Horizon City to Overpelt | 5,368.28 mi (8,639.42 km) |
| Horizon City to Paal | 5,366.89 mi (8,637.18 km) |
| Horizon City to Peer | 5,372.98 mi (8,646.98 km) |
| Horizon City to Pepinster | 5,408.84 mi (8,704.68 km) |
| Horizon City to Peruwelz | 5,331.06 mi (8,579.50 km) |
| Horizon City to Perwez | 5,370.95 mi (8,643.71 km) |
| Horizon City to Philippeville | 5,378.50 mi (8,655.85 km) |
