| Tucson to Opwijk | 5,471.52 mi (8,805.56 km) |
| Tucson to Ostend | 5,417.35 mi (8,718.39 km) |
| Tucson to Oud-Heverlee | 5,493.71 mi (8,841.26 km) |
| Tucson to Oud-Turnhout | 5,483.30 mi (8,824.53 km) |
| Tucson to Oudenaarde | 5,456.64 mi (8,781.61 km) |
| Tucson to Oudenburg | 5,421.91 mi (8,725.72 km) |
| Tucson to Oupeye | 5,532.16 mi (8,903.16 km) |
| Tucson to Overijse | 5,491.35 mi (8,837.48 km) |
| Tucson to Overpelt | 5,502.18 mi (8,854.90 km) |
| Tucson to Paal | 5,501.79 mi (8,854.28 km) |
| Tucson to Peer | 5,507.10 mi (8,862.82 km) |
| Tucson to Pepinster | 5,544.27 mi (8,922.64 km) |
| Tucson to Peruwelz | 5,470.34 mi (8,803.66 km) |
| Tucson to Perwez | 5,507.85 mi (8,864.04 km) |
| Tucson to Philippeville | 5,517.28 mi (8,879.20 km) |
