| Westerville to Octeville | 3,836.26 mi (6,173.87 km) |
| Westerville to Oignies | 3,998.99 mi (6,435.75 km) |
| Westerville to Oissel | 3,956.17 mi (6,366.83 km) |
| Westerville to Olivet | 4,034.09 mi (6,492.24 km) |
| Westerville to Ollioules | 4,358.82 mi (7,014.84 km) |
| Westerville to Olonne-sur-Mer | 3,919.19 mi (6,307.33 km) |
| Westerville to Oloron-Sainte-Marie | 4,073.63 mi (6,555.88 km) |
| Westerville to Onet Village | 4,175.85 mi (6,720.37 km) |
| Westerville to Onnaing | 4,025.37 mi (6,478.20 km) |
| Westerville to Orange | 4,279.10 mi (6,886.55 km) |
| Westerville to Orchies | 4,008.74 mi (6,451.44 km) |
| Westerville to Orleans | 4,033.24 mi (6,490.88 km) |
| Westerville to Orly | 4,027.22 mi (6,481.18 km) |
| Westerville to Ormesson-sur-Marne | 4,031.87 mi (6,488.66 km) |
| Westerville to Orsay | 4,020.24 mi (6,469.95 km) |
