| Bals to Olivenza | 1,650.07 mi (2,655.53 km) |
| Bals to Olot | 1,094.28 mi (1,761.08 km) |
| Bals to Onate | 1,322.05 mi (2,127.63 km) |
| Bals to Onda | 1,279.00 mi (2,058.36 km) |
| Bals to Onteniente | 1,326.90 mi (2,135.43 km) |
| Bals to Orihuela | 1,365.44 mi (2,197.47 km) |
| Bals to Osuna | 1,594.77 mi (2,566.53 km) |
| Bals to Ourense | 1,601.87 mi (2,577.96 km) |
| Bals to Oviedo | 1,485.17 mi (2,390.15 km) |
| Bals to Paiporta | 1,300.68 mi (2,093.24 km) |
| Bals to Pajara | 2,367.07 mi (3,809.42 km) |
| Bals to Palafolls | 1,091.18 mi (1,756.08 km) |
| Bals to Palafrugell | 1,065.92 mi (1,715.44 km) |
| Bals to Palamos | 1,069.00 mi (1,720.39 km) |
| Bals to Palencia | 1,444.08 mi (2,324.03 km) |
