| Westerville to Opwijk | 4,030.71 mi (6,486.80 km) |
| Westerville to Ostend | 3,973.53 mi (6,394.79 km) |
| Westerville to Oud-Heverlee | 4,053.67 mi (6,523.76 km) |
| Westerville to Oud-Turnhout | 4,051.05 mi (6,519.54 km) |
| Westerville to Oudenaarde | 4,011.42 mi (6,455.76 km) |
| Westerville to Oudenburg | 3,977.94 mi (6,401.88 km) |
| Westerville to Oupeye | 4,095.63 mi (6,591.28 km) |
| Westerville to Overijse | 4,050.01 mi (6,517.86 km) |
| Westerville to Overpelt | 4,070.89 mi (6,551.47 km) |
| Westerville to Paal | 4,066.98 mi (6,545.17 km) |
| Westerville to Peer | 4,074.94 mi (6,557.98 km) |
| Westerville to Pepinster | 4,106.88 mi (6,609.38 km) |
| Westerville to Peruwelz | 4,020.86 mi (6,470.95 km) |
| Westerville to Perwez | 4,065.96 mi (6,543.53 km) |
| Westerville to Philippeville | 4,068.76 mi (6,548.04 km) |
