| Tucson Mountains to Opwijk | 5,471.05 mi (8,804.80 km) |
| Tucson Mountains to Ostend | 5,416.96 mi (8,717.75 km) |
| Tucson Mountains to Oud-Heverlee | 5,493.21 mi (8,840.47 km) |
| Tucson Mountains to Oud-Turnhout | 5,482.68 mi (8,823.52 km) |
| Tucson Mountains to Oudenaarde | 5,456.25 mi (8,780.99 km) |
| Tucson Mountains to Oudenburg | 5,421.51 mi (8,725.08 km) |
| Tucson Mountains to Oupeye | 5,531.59 mi (8,902.24 km) |
| Tucson Mountains to Overijse | 5,490.88 mi (8,836.72 km) |
| Tucson Mountains to Overpelt | 5,501.53 mi (8,853.85 km) |
| Tucson Mountains to Paal | 5,501.21 mi (8,853.34 km) |
| Tucson Mountains to Peer | 5,506.46 mi (8,861.79 km) |
| Tucson Mountains to Pepinster | 5,543.71 mi (8,921.74 km) |
| Tucson Mountains to Peruwelz | 5,470.02 mi (8,803.15 km) |
| Tucson Mountains to Perwez | 5,507.39 mi (8,863.28 km) |
| Tucson Mountains to Philippeville | 5,516.92 mi (8,878.63 km) |
