| Mersin to Olivares | 2,229.81 mi (3,588.53 km) |
| Mersin to Olivenza | 2,264.19 mi (3,643.86 km) |
| Mersin to Olot | 1,742.92 mi (2,804.96 km) |
| Mersin to Onate | 1,993.05 mi (3,207.50 km) |
| Mersin to Onda | 1,890.57 mi (3,042.58 km) |
| Mersin to Onteniente | 1,916.81 mi (3,084.81 km) |
| Mersin to Orihuela | 1,941.90 mi (3,125.18 km) |
| Mersin to Osuna | 2,175.83 mi (3,501.65 km) |
| Mersin to Ourense | 2,271.47 mi (3,655.58 km) |
| Mersin to Oviedo | 2,165.28 mi (3,484.67 km) |
| Mersin to Paiporta | 1,902.10 mi (3,061.14 km) |
| Mersin to Pajara | 2,865.66 mi (4,611.84 km) |
| Mersin to Palafolls | 1,728.81 mi (2,782.25 km) |
| Mersin to Palafrugell | 1,707.87 mi (2,748.56 km) |
| Mersin to Palamos | 1,709.51 mi (2,751.20 km) |
