| Biga to Olivares | 1,797.31 mi (2,892.49 km) |
| Biga to Olivenza | 1,823.75 mi (2,935.04 km) |
| Biga to Olot | 1,289.24 mi (2,074.83 km) |
| Biga to Onate | 1,535.79 mi (2,471.62 km) |
| Biga to Onda | 1,448.07 mi (2,330.45 km) |
| Biga to Onteniente | 1,481.31 mi (2,383.94 km) |
| Biga to Orihuela | 1,511.12 mi (2,431.91 km) |
| Biga to Osuna | 1,745.72 mi (2,809.47 km) |
| Biga to Ourense | 1,815.59 mi (2,921.91 km) |
| Biga to Oviedo | 1,706.75 mi (2,746.74 km) |
| Biga to Paiporta | 1,462.80 mi (2,354.15 km) |
| Biga to Pajara | 2,473.07 mi (3,980.03 km) |
| Biga to Palafolls | 1,277.67 mi (2,056.22 km) |
| Biga to Palafrugell | 1,255.49 mi (2,020.52 km) |
| Biga to Palamos | 1,257.50 mi (2,023.75 km) |
