| Groningen to Cividale del Friuli | 579.15 mi (932.06 km) |
| Groningen to Civita Castellana | 801.21 mi (1,289.42 km) |
| Groningen to Civitanova Marche | 759.46 mi (1,222.23 km) |
| Groningen to Civitavecchia | 805.23 mi (1,295.89 km) |
| Groningen to Civitella in Val di Chiana | 716.80 mi (1,153.58 km) |
| Groningen to Clusone | 528.74 mi (850.93 km) |
| Groningen to Coccaglio | 550.44 mi (885.85 km) |
| Groningen to Codigoro | 630.99 mi (1,015.49 km) |
| Groningen to Codogno | 574.27 mi (924.20 km) |
| Groningen to Codroipo | 577.14 mi (928.82 km) |
| Groningen to Cogoleto | 617.13 mi (993.18 km) |
| Groningen to Colle di Val d'Elsa | 709.62 mi (1,142.02 km) |
| Groningen to Colle Salvetti | 688.03 mi (1,107.28 km) |
| Groningen to Collecchio | 607.75 mi (978.07 km) |
| Groningen to Colleferro | 847.83 mi (1,364.45 km) |
