| Adrian to Olivares | 4,008.21 mi (6,450.59 km) |
| Adrian to Olivenza | 3,919.24 mi (6,307.40 km) |
| Adrian to Olot | 4,228.37 mi (6,804.90 km) |
| Adrian to Onate | 3,983.86 mi (6,411.41 km) |
| Adrian to Onda | 4,187.81 mi (6,739.63 km) |
| Adrian to Onteniente | 4,214.11 mi (6,781.96 km) |
| Adrian to Orihuela | 4,225.84 mi (6,800.84 km) |
| Adrian to Osuna | 4,064.14 mi (6,540.61 km) |
| Adrian to Ourense | 3,763.25 mi (6,056.36 km) |
| Adrian to Oviedo | 3,821.32 mi (6,149.83 km) |
| Adrian to Paiporta | 4,200.41 mi (6,759.90 km) |
| Adrian to Pajara | 3,951.92 mi (6,360.00 km) |
| Adrian to Palafolls | 4,258.63 mi (6,853.61 km) |
| Adrian to Palafrugell | 4,267.38 mi (6,867.68 km) |
| Adrian to Palamos | 4,268.55 mi (6,869.57 km) |
