| Sinaia to Olivenza | 1,725.09 mi (2,776.26 km) |
| Sinaia to Olot | 1,167.16 mi (1,878.36 km) |
| Sinaia to Onate | 1,387.70 mi (2,233.29 km) |
| Sinaia to Onda | 1,356.95 mi (2,183.80 km) |
| Sinaia to Onteniente | 1,407.74 mi (2,265.53 km) |
| Sinaia to Orihuela | 1,447.83 mi (2,330.05 km) |
| Sinaia to Osuna | 1,675.08 mi (2,695.77 km) |
| Sinaia to Ourense | 1,665.98 mi (2,681.14 km) |
| Sinaia to Oviedo | 1,547.29 mi (2,490.12 km) |
| Sinaia to Paiporta | 1,380.04 mi (2,220.97 km) |
| Sinaia to Pajara | 2,453.49 mi (3,948.50 km) |
| Sinaia to Palafolls | 1,166.30 mi (1,876.97 km) |
| Sinaia to Palafrugell | 1,140.47 mi (1,835.41 km) |
| Sinaia to Palamos | 1,143.80 mi (1,840.76 km) |
| Sinaia to Palencia | 1,511.72 mi (2,432.88 km) |
