| Gallup to Opwijk | 5,211.55 mi (8,387.18 km) |
| Gallup to Ostend | 5,157.59 mi (8,300.34 km) |
| Gallup to Oud-Heverlee | 5,233.68 mi (8,422.79 km) |
| Gallup to Oud-Turnhout | 5,222.95 mi (8,405.53 km) |
| Gallup to Oudenaarde | 5,196.90 mi (8,363.60 km) |
| Gallup to Oudenburg | 5,162.15 mi (8,307.67 km) |
| Gallup to Oupeye | 5,271.94 mi (8,484.37 km) |
| Gallup to Overijse | 5,231.39 mi (8,419.11 km) |
| Gallup to Overpelt | 5,241.76 mi (8,435.80 km) |
| Gallup to Paal | 5,241.53 mi (8,435.43 km) |
| Gallup to Peer | 5,246.71 mi (8,443.77 km) |
| Gallup to Pepinster | 5,284.07 mi (8,503.89 km) |
| Gallup to Peruwelz | 5,210.79 mi (8,385.95 km) |
| Gallup to Perwez | 5,247.90 mi (8,445.68 km) |
| Gallup to Philippeville | 5,257.63 mi (8,461.33 km) |
