| Watsonville to Opwijk | 5,538.09 mi (8,912.69 km) |
| Watsonville to Ostend | 5,488.34 mi (8,832.62 km) |
| Watsonville to Oud-Heverlee | 5,558.85 mi (8,946.10 km) |
| Watsonville to Oud-Turnhout | 5,542.44 mi (8,919.70 km) |
| Watsonville to Oudenaarde | 5,527.39 mi (8,895.48 km) |
| Watsonville to Oudenburg | 5,492.85 mi (8,839.89 km) |
| Watsonville to Oupeye | 5,593.06 mi (9,001.15 km) |
| Watsonville to Overijse | 5,557.66 mi (8,944.19 km) |
| Watsonville to Overpelt | 5,559.85 mi (8,947.71 km) |
| Watsonville to Paal | 5,562.36 mi (8,951.75 km) |
| Watsonville to Peer | 5,565.31 mi (8,956.49 km) |
| Watsonville to Pepinster | 5,605.44 mi (9,021.09 km) |
| Watsonville to Peruwelz | 5,544.17 mi (8,922.49 km) |
| Watsonville to Perwez | 5,574.04 mi (8,970.55 km) |
| Watsonville to Philippeville | 5,588.67 mi (8,994.09 km) |
