| Somerville to Olivares | 3,375.40 mi (5,432.18 km) |
| Somerville to Olivenza | 3,289.83 mi (5,294.46 km) |
| Somerville to Olot | 3,634.60 mi (5,849.32 km) |
| Somerville to Onate | 3,384.22 mi (5,446.37 km) |
| Somerville to Onda | 3,576.88 mi (5,756.44 km) |
| Somerville to Onteniente | 3,597.27 mi (5,789.25 km) |
| Somerville to Orihuela | 3,605.15 mi (5,801.93 km) |
| Somerville to Osuna | 3,432.42 mi (5,523.94 km) |
| Somerville to Ourense | 3,149.44 mi (5,068.53 km) |
| Somerville to Oviedo | 3,216.75 mi (5,176.87 km) |
| Somerville to Paiporta | 3,586.68 mi (5,772.20 km) |
| Somerville to Pajara | 3,289.75 mi (5,294.34 km) |
| Somerville to Palafolls | 3,662.73 mi (5,894.60 km) |
| Somerville to Palafrugell | 3,673.72 mi (5,912.29 km) |
| Somerville to Palamos | 3,674.44 mi (5,913.43 km) |
