| Westerville to Olivares | 4,004.47 mi (6,444.57 km) |
| Westerville to Olivenza | 3,917.59 mi (6,304.74 km) |
| Westerville to Olot | 4,245.08 mi (6,831.79 km) |
| Westerville to Onate | 3,997.73 mi (6,433.72 km) |
| Westerville to Onda | 4,196.50 mi (6,753.62 km) |
| Westerville to Onteniente | 4,219.78 mi (6,791.08 km) |
| Westerville to Orihuela | 4,229.43 mi (6,806.62 km) |
| Westerville to Osuna | 4,061.12 mi (6,535.74 km) |
| Westerville to Ourense | 3,770.14 mi (6,067.46 km) |
| Westerville to Oviedo | 3,832.76 mi (6,168.24 km) |
| Westerville to Paiporta | 4,207.69 mi (6,771.62 km) |
| Westerville to Pajara | 3,917.03 mi (6,303.85 km) |
| Westerville to Palafolls | 4,274.44 mi (6,879.04 km) |
| Westerville to Palafrugell | 4,284.18 mi (6,894.72 km) |
| Westerville to Palamos | 4,285.15 mi (6,896.28 km) |
