| Tring to Olivares | 1,028.84 mi (1,655.76 km) |
| Tring to Olivenza | 957.58 mi (1,541.08 km) |
| Tring to Olot | 680.46 mi (1,095.10 km) |
| Tring to Onate | 610.96 mi (983.24 km) |
| Tring to Onda | 817.85 mi (1,316.20 km) |
| Tring to Onteniente | 896.42 mi (1,442.65 km) |
| Tring to Orihuela | 947.41 mi (1,524.71 km) |
| Tring to Osuna | 1,029.22 mi (1,656.36 km) |
| Tring to Ourense | 735.46 mi (1,183.62 km) |
| Tring to Oviedo | 630.61 mi (1,014.87 km) |
| Tring to Paiporta | 854.65 mi (1,375.43 km) |
| Tring to Pajara | 1,762.42 mi (2,836.34 km) |
| Tring to Palafolls | 717.89 mi (1,155.33 km) |
| Tring to Palafrugell | 705.79 mi (1,135.86 km) |
| Tring to Palamos | 710.20 mi (1,142.95 km) |
