| Fountain Hills to Opwijk | 5,418.64 mi (8,720.46 km) |
| Fountain Hills to Ostend | 5,365.00 mi (8,634.13 km) |
| Fountain Hills to Oud-Heverlee | 5,440.67 mi (8,755.91 km) |
| Fountain Hills to Oud-Turnhout | 5,429.39 mi (8,737.76 km) |
| Fountain Hills to Oudenaarde | 5,404.33 mi (8,697.43 km) |
| Fountain Hills to Oudenburg | 5,369.56 mi (8,641.47 km) |
| Fountain Hills to Oupeye | 5,478.60 mi (8,816.95 km) |
| Fountain Hills to Overijse | 5,438.48 mi (8,752.38 km) |
| Fountain Hills to Overpelt | 5,448.09 mi (8,767.86 km) |
| Fountain Hills to Paal | 5,448.12 mi (8,767.90 km) |
| Fountain Hills to Peer | 5,453.10 mi (8,775.92 km) |
| Fountain Hills to Pepinster | 5,490.77 mi (8,836.53 km) |
| Fountain Hills to Peruwelz | 5,418.50 mi (8,720.23 km) |
| Fountain Hills to Perwez | 5,454.99 mi (8,778.96 km) |
| Fountain Hills to Philippeville | 5,465.18 mi (8,795.36 km) |
