| Rockwall to Olivares | 4,900.29 mi (7,886.25 km) |
| Rockwall to Olivenza | 4,814.47 mi (7,748.13 km) |
| Rockwall to Olot | 5,142.75 mi (8,276.46 km) |
| Rockwall to Onate | 4,896.19 mi (7,879.66 km) |
| Rockwall to Onda | 5,095.59 mi (8,200.55 km) |
| Rockwall to Onteniente | 5,118.66 mi (8,237.69 km) |
| Rockwall to Orihuela | 5,127.94 mi (8,252.62 km) |
| Rockwall to Osuna | 4,957.27 mi (7,977.96 km) |
| Rockwall to Ourense | 4,669.18 mi (7,514.32 km) |
| Rockwall to Oviedo | 4,731.65 mi (7,614.86 km) |
| Rockwall to Paiporta | 5,106.73 mi (8,218.48 km) |
| Rockwall to Pajara | 4,775.12 mi (7,684.81 km) |
| Rockwall to Palafolls | 5,172.42 mi (8,324.21 km) |
| Rockwall to Palafrugell | 5,181.83 mi (8,339.35 km) |
| Rockwall to Palamos | 5,182.87 mi (8,341.02 km) |
