| Irun to Castelfidardo | 768.78 mi (1,237.24 km) |
| Irun to Castelfiorentino | 639.24 mi (1,028.76 km) |
| Irun to Castelfranco di Sopra | 668.72 mi (1,076.20 km) |
| Irun to Castelfranco di Sotto | 628.13 mi (1,010.87 km) |
| Irun to Castelfranco Emilia | 643.81 mi (1,036.11 km) |
| Irun to Castelfranco Veneto | 694.14 mi (1,117.11 km) |
| Irun to Castellabate | 886.06 mi (1,425.98 km) |
| Irun to Castellammare del Golfo | 850.13 mi (1,368.15 km) |
| Irun to Castellammare di Stabia | 853.40 mi (1,373.41 km) |
| Irun to Castellamonte | 489.78 mi (788.23 km) |
| Irun to Castellana Grotte | 984.07 mi (1,583.70 km) |
| Irun to Castellaneta | 977.33 mi (1,572.86 km) |
| Irun to Castellanza | 549.49 mi (884.32 km) |
| Irun to Castellarano | 630.45 mi (1,014.61 km) |
| Irun to Castelleone | 586.21 mi (943.41 km) |
