| Crystal to Olivares | 4,338.40 mi (6,981.98 km) |
| Crystal to Olivenza | 4,244.29 mi (6,830.53 km) |
| Crystal to Olot | 4,494.78 mi (7,233.65 km) |
| Crystal to Onate | 4,261.83 mi (6,858.75 km) |
| Crystal to Onda | 4,479.73 mi (7,209.43 km) |
| Crystal to Onteniente | 4,514.96 mi (7,266.12 km) |
| Crystal to Orihuela | 4,532.80 mi (7,294.84 km) |
| Crystal to Osuna | 4,391.80 mi (7,067.92 km) |
| Crystal to Ourense | 4,064.89 mi (6,541.80 km) |
| Crystal to Oviedo | 4,108.56 mi (6,612.08 km) |
| Crystal to Paiporta | 4,496.51 mi (7,236.43 km) |
| Crystal to Pajara | 4,362.22 mi (7,020.31 km) |
| Crystal to Palafolls | 4,527.65 mi (7,286.54 km) |
| Crystal to Palafrugell | 4,533.12 mi (7,295.36 km) |
| Crystal to Palamos | 4,534.92 mi (7,298.25 km) |
