| Porthcawl to Noventa Vicentina | 816.97 mi (1,314.79 km) |
| Porthcawl to Novi di Modena | 809.41 mi (1,302.62 km) |
| Porthcawl to Novi Ligure | 737.73 mi (1,187.26 km) |
| Porthcawl to Nuoro | 990.44 mi (1,593.97 km) |
| Porthcawl to Occhiobello | 834.11 mi (1,342.36 km) |
| Porthcawl to Oderzo | 834.82 mi (1,343.51 km) |
| Porthcawl to Oggiono | 712.18 mi (1,146.15 km) |
| Porthcawl to Olbia | 961.70 mi (1,547.70 km) |
| Porthcawl to Oleggio | 693.42 mi (1,115.94 km) |
| Porthcawl to Olgiate Comasco | 697.74 mi (1,122.91 km) |
| Porthcawl to Olgiate Olona | 701.19 mi (1,128.46 km) |
| Porthcawl to Omegna | 672.72 mi (1,082.63 km) |
| Porthcawl to Opera | 724.66 mi (1,166.23 km) |
| Porthcawl to Oppeano | 802.74 mi (1,291.88 km) |
| Porthcawl to Orbassano | 681.94 mi (1,097.48 km) |
