| Wallingford Center to Olivares | 3,479.43 mi (5,599.60 km) |
| Wallingford Center to Olivenza | 3,394.48 mi (5,462.89 km) |
| Wallingford Center to Olot | 3,742.84 mi (6,023.53 km) |
| Wallingford Center to Onate | 3,492.14 mi (5,620.06 km) |
| Wallingford Center to Onda | 3,683.79 mi (5,928.49 km) |
| Wallingford Center to Onteniente | 3,703.55 mi (5,960.28 km) |
| Wallingford Center to Orihuela | 3,710.95 mi (5,972.20 km) |
| Wallingford Center to Osuna | 3,536.62 mi (5,691.63 km) |
| Wallingford Center to Ourense | 3,256.21 mi (5,240.37 km) |
| Wallingford Center to Oviedo | 3,324.36 mi (5,350.04 km) |
| Wallingford Center to Paiporta | 3,693.30 mi (5,943.78 km) |
| Wallingford Center to Pajara | 3,381.44 mi (5,441.90 km) |
| Wallingford Center to Palafolls | 3,770.83 mi (6,068.57 km) |
| Wallingford Center to Palafrugell | 3,781.96 mi (6,086.48 km) |
| Wallingford Center to Palamos | 3,782.65 mi (6,087.58 km) |
