| Irmo to Cividale del Friuli | 4,770.48 mi (7,677.34 km) |
| Irmo to Civita Castellana | 4,850.14 mi (7,805.54 km) |
| Irmo to Civitanova Marche | 4,875.57 mi (7,846.47 km) |
| Irmo to Civitavecchia | 4,829.13 mi (7,771.73 km) |
| Irmo to Civitella in Val di Chiana | 4,782.62 mi (7,696.88 km) |
| Irmo to Clusone | 4,628.14 mi (7,448.27 km) |
| Irmo to Coccaglio | 4,639.05 mi (7,465.83 km) |
| Irmo to Codigoro | 4,754.71 mi (7,651.97 km) |
| Irmo to Codogno | 4,639.36 mi (7,466.34 km) |
| Irmo to Codroipo | 4,755.63 mi (7,653.45 km) |
| Irmo to Cogoleto | 4,615.88 mi (7,428.54 km) |
| Irmo to Colle di Val d'Elsa | 4,757.21 mi (7,655.99 km) |
| Irmo to Colle Salvetti | 4,721.93 mi (7,599.20 km) |
| Irmo to Collecchio | 4,674.34 mi (7,522.62 km) |
| Irmo to Colleferro | 4,896.17 mi (7,879.62 km) |
