| Irmo to Castelfidardo | 4,861.86 mi (7,824.40 km) |
| Irmo to Castelfiorentino | 4,743.44 mi (7,633.83 km) |
| Irmo to Castelfranco di Sopra | 4,768.94 mi (7,674.87 km) |
| Irmo to Castelfranco di Sotto | 4,730.64 mi (7,613.24 km) |
| Irmo to Castelfranco Emilia | 4,715.79 mi (7,589.33 km) |
| Irmo to Castelfranco Veneto | 4,720.33 mi (7,596.64 km) |
| Irmo to Castellabate | 5,033.69 mi (8,100.94 km) |
| Irmo to Castellammare del Golfo | 5,016.27 mi (8,072.90 km) |
| Irmo to Castellammare di Stabia | 4,997.75 mi (8,043.11 km) |
| Irmo to Castellamonte | 4,545.26 mi (7,314.89 km) |
| Irmo to Castellana Grotte | 5,111.74 mi (8,226.55 km) |
| Irmo to Castellaneta | 5,110.35 mi (8,224.31 km) |
| Irmo to Castellanza | 4,590.48 mi (7,387.66 km) |
| Irmo to Castellarano | 4,704.90 mi (7,571.81 km) |
| Irmo to Castelleone | 4,637.69 mi (7,463.64 km) |
