| Ada to Olivenza | 1,468.60 mi (2,363.49 km) |
| Ada to Olot | 909.86 mi (1,464.27 km) |
| Ada to Onate | 1,125.26 mi (1,810.94 km) |
| Ada to Onda | 1,104.80 mi (1,778.00 km) |
| Ada to Onteniente | 1,159.76 mi (1,866.45 km) |
| Ada to Orihuela | 1,202.40 mi (1,935.07 km) |
| Ada to Osuna | 1,425.36 mi (2,293.90 km) |
| Ada to Ourense | 1,402.87 mi (2,257.69 km) |
| Ada to Oviedo | 1,283.77 mi (2,066.03 km) |
| Ada to Paiporta | 1,129.83 mi (1,818.28 km) |
| Ada to Pajara | 2,213.71 mi (3,562.61 km) |
| Ada to Palafolls | 911.34 mi (1,466.67 km) |
| Ada to Palafrugell | 884.99 mi (1,424.25 km) |
| Ada to Palamos | 888.58 mi (1,430.02 km) |
| Ada to Palencia | 1,250.05 mi (2,011.76 km) |
