| Penarth to Noventa Vicentina | 795.35 mi (1,279.99 km) |
| Penarth to Novi di Modena | 788.15 mi (1,268.41 km) |
| Penarth to Novi Ligure | 717.35 mi (1,154.47 km) |
| Penarth to Nuoro | 972.56 mi (1,565.19 km) |
| Penarth to Occhiobello | 812.63 mi (1,307.81 km) |
| Penarth to Oderzo | 812.78 mi (1,308.04 km) |
| Penarth to Oggiono | 690.92 mi (1,111.93 km) |
| Penarth to Olbia | 943.38 mi (1,518.22 km) |
| Penarth to Oleggio | 672.54 mi (1,082.34 km) |
| Penarth to Olgiate Comasco | 676.61 mi (1,088.91 km) |
| Penarth to Olgiate Olona | 680.19 mi (1,094.66 km) |
| Penarth to Omegna | 651.74 mi (1,048.87 km) |
| Penarth to Opera | 703.69 mi (1,132.48 km) |
| Penarth to Oppeano | 781.19 mi (1,257.20 km) |
| Penarth to Orbassano | 662.03 mi (1,065.43 km) |
