| Celbridge to Olivenza | 1,012.72 mi (1,629.81 km) |
| Celbridge to Olot | 875.88 mi (1,409.59 km) |
| Celbridge to Onate | 736.55 mi (1,185.37 km) |
| Celbridge to Onda | 969.96 mi (1,561.01 km) |
| Celbridge to Onteniente | 1,041.56 mi (1,676.22 km) |
| Celbridge to Orihuela | 1,086.99 mi (1,749.33 km) |
| Celbridge to Osuna | 1,114.86 mi (1,794.20 km) |
| Celbridge to Ourense | 762.58 mi (1,227.25 km) |
| Celbridge to Oviedo | 690.14 mi (1,110.67 km) |
| Celbridge to Paiporta | 1,003.48 mi (1,614.94 km) |
| Celbridge to Pajara | 1,768.84 mi (2,846.67 km) |
| Celbridge to Palafolls | 913.68 mi (1,470.43 km) |
| Celbridge to Palafrugell | 907.40 mi (1,460.31 km) |
| Celbridge to Palamos | 911.06 mi (1,466.21 km) |
| Celbridge to Palencia | 787.69 mi (1,267.66 km) |
