| Penarth to Castelfidardo | 951.93 mi (1,531.98 km) |
| Penarth to Castelfiorentino | 850.63 mi (1,368.96 km) |
| Penarth to Castelfranco di Sopra | 870.82 mi (1,401.45 km) |
| Penarth to Castelfranco di Sotto | 838.06 mi (1,348.73 km) |
| Penarth to Castelfranco Emilia | 807.11 mi (1,298.92 km) |
| Penarth to Castelfranco Veneto | 795.16 mi (1,279.69 km) |
| Penarth to Castellabate | 1,157.96 mi (1,863.55 km) |
| Penarth to Castellammare del Golfo | 1,210.46 mi (1,948.04 km) |
| Penarth to Castellammare di Stabia | 1,120.00 mi (1,802.46 km) |
| Penarth to Castellamonte | 649.79 mi (1,045.73 km) |
| Penarth to Castellana Grotte | 1,209.04 mi (1,945.77 km) |
| Penarth to Castellaneta | 1,212.36 mi (1,951.11 km) |
| Penarth to Castellanza | 681.55 mi (1,096.85 km) |
| Penarth to Castellarano | 798.48 mi (1,285.03 km) |
| Penarth to Castelleone | 727.71 mi (1,171.13 km) |
