| Trnava to Olivenza | 1,397.53 mi (2,249.10 km) |
| Trnava to Olot | 847.59 mi (1,364.06 km) |
| Trnava to Onate | 1,029.76 mi (1,657.24 km) |
| Trnava to Onda | 1,054.67 mi (1,697.33 km) |
| Trnava to Onteniente | 1,119.94 mi (1,802.37 km) |
| Trnava to Orihuela | 1,167.97 mi (1,879.67 km) |
| Trnava to Osuna | 1,375.74 mi (2,214.04 km) |
| Trnava to Ourense | 1,297.16 mi (2,087.58 km) |
| Trnava to Oviedo | 1,174.13 mi (1,889.58 km) |
| Trnava to Paiporta | 1,084.70 mi (1,745.66 km) |
| Trnava to Pajara | 2,178.40 mi (3,505.79 km) |
| Trnava to Palafolls | 857.92 mi (1,380.69 km) |
| Trnava to Palafrugell | 830.62 mi (1,336.76 km) |
| Trnava to Palamos | 835.03 mi (1,343.85 km) |
| Trnava to Palencia | 1,158.06 mi (1,863.71 km) |
