| Ano Syros to Olivenza | 1,733.96 mi (2,790.54 km) |
| Ano Syros to Olot | 1,229.46 mi (1,978.63 km) |
| Ano Syros to Onate | 1,484.15 mi (2,388.50 km) |
| Ano Syros to Onda | 1,363.25 mi (2,193.94 km) |
| Ano Syros to Onteniente | 1,384.93 mi (2,228.83 km) |
| Ano Syros to Orihuela | 1,407.83 mi (2,265.69 km) |
| Ano Syros to Osuna | 1,640.97 mi (2,640.89 km) |
| Ano Syros to Ourense | 1,758.00 mi (2,829.23 km) |
| Ano Syros to Oviedo | 1,658.09 mi (2,668.44 km) |
| Ano Syros to Paiporta | 1,372.46 mi (2,208.77 km) |
| Ano Syros to Pajara | 2,330.17 mi (3,750.04 km) |
| Ano Syros to Palafolls | 1,211.63 mi (1,949.94 km) |
| Ano Syros to Palafrugell | 1,192.70 mi (1,919.46 km) |
| Ano Syros to Palamos | 1,193.78 mi (1,921.21 km) |
| Ano Syros to Palencia | 1,587.20 mi (2,554.35 km) |
