| Tigard to Olivares | 5,490.21 mi (8,835.63 km) |
| Tigard to Olivenza | 5,389.78 mi (8,674.01 km) |
| Tigard to Olot | 5,510.07 mi (8,867.60 km) |
| Tigard to Onate | 5,312.91 mi (8,550.31 km) |
| Tigard to Onda | 5,548.92 mi (8,930.13 km) |
| Tigard to Onteniente | 5,600.89 mi (9,013.76 km) |
| Tigard to Orihuela | 5,630.45 mi (9,061.34 km) |
| Tigard to Osuna | 5,536.61 mi (8,910.31 km) |
| Tigard to Ourense | 5,172.57 mi (8,324.45 km) |
| Tigard to Oviedo | 5,185.86 mi (8,345.84 km) |
| Tigard to Paiporta | 5,573.53 mi (8,969.73 km) |
| Tigard to Pajara | 5,660.87 mi (9,110.28 km) |
| Tigard to Palafolls | 5,546.73 mi (8,926.60 km) |
| Tigard to Palafrugell | 5,545.02 mi (8,923.85 km) |
| Tigard to Palamos | 5,548.05 mi (8,928.72 km) |
