| Stockton-on-Tees to Olivares | 1,206.93 mi (1,942.37 km) |
| Stockton-on-Tees to Olivenza | 1,130.30 mi (1,819.04 km) |
| Stockton-on-Tees to Olot | 873.25 mi (1,405.36 km) |
| Stockton-on-Tees to Onate | 798.64 mi (1,285.29 km) |
| Stockton-on-Tees to Onda | 1,010.46 mi (1,626.19 km) |
| Stockton-on-Tees to Onteniente | 1,088.58 mi (1,751.90 km) |
| Stockton-on-Tees to Orihuela | 1,139.10 mi (1,833.20 km) |
| Stockton-on-Tees to Osuna | 1,211.12 mi (1,949.11 km) |
| Stockton-on-Tees to Ourense | 895.92 mi (1,441.84 km) |
| Stockton-on-Tees to Oviedo | 800.85 mi (1,288.84 km) |
| Stockton-on-Tees to Paiporta | 1,047.06 mi (1,685.09 km) |
| Stockton-on-Tees to Pajara | 1,921.78 mi (3,092.80 km) |
| Stockton-on-Tees to Palafolls | 910.53 mi (1,465.35 km) |
| Stockton-on-Tees to Palafrugell | 897.75 mi (1,444.79 km) |
| Stockton-on-Tees to Palamos | 902.25 mi (1,452.02 km) |
