| Sumner to Olivares | 5,385.81 mi (8,667.62 km) |
| Sumner to Olivenza | 5,285.08 mi (8,505.52 km) |
| Sumner to Olot | 5,396.36 mi (8,684.60 km) |
| Sumner to Onate | 5,201.70 mi (8,371.33 km) |
| Sumner to Onda | 5,438.34 mi (8,752.16 km) |
| Sumner to Onteniente | 5,491.30 mi (8,837.39 km) |
| Sumner to Orihuela | 5,521.61 mi (8,886.17 km) |
| Sumner to Osuna | 5,431.52 mi (8,741.19 km) |
| Sumner to Ourense | 5,065.47 mi (8,152.09 km) |
| Sumner to Oviedo | 5,076.62 mi (8,170.02 km) |
| Sumner to Paiporta | 5,463.41 mi (8,792.50 km) |
| Sumner to Pajara | 5,572.30 mi (8,967.75 km) |
| Sumner to Palafolls | 5,433.15 mi (8,743.82 km) |
| Sumner to Palafrugell | 5,431.05 mi (8,740.43 km) |
| Sumner to Palamos | 5,434.14 mi (8,745.40 km) |
