| Harstad to Cividale del Friuli | 1,572.28 mi (2,530.34 km) |
| Harstad to Civita Castellana | 1,837.48 mi (2,957.14 km) |
| Harstad to Civitanova Marche | 1,764.86 mi (2,840.27 km) |
| Harstad to Civitavecchia | 1,852.95 mi (2,982.03 km) |
| Harstad to Civitella in Val di Chiana | 1,762.48 mi (2,836.43 km) |
| Harstad to Clusone | 1,600.31 mi (2,575.45 km) |
| Harstad to Coccaglio | 1,622.16 mi (2,610.61 km) |
| Harstad to Codigoro | 1,663.46 mi (2,677.07 km) |
| Harstad to Codogno | 1,651.26 mi (2,657.45 km) |
| Harstad to Codroipo | 1,582.95 mi (2,547.51 km) |
| Harstad to Cogoleto | 1,710.01 mi (2,752.00 km) |
| Harstad to Colle di Val d'Elsa | 1,765.82 mi (2,841.81 km) |
| Harstad to Colle Salvetti | 1,754.79 mi (2,824.06 km) |
| Harstad to Collecchio | 1,676.90 mi (2,698.71 km) |
| Harstad to Colleferro | 1,874.65 mi (3,016.95 km) |
