| Grand Forks to Cividale del Friuli | 4,709.84 mi (7,579.76 km) |
| Grand Forks to Civita Castellana | 4,870.11 mi (7,837.69 km) |
| Grand Forks to Civitanova Marche | 4,863.26 mi (7,826.66 km) |
| Grand Forks to Civitavecchia | 4,859.17 mi (7,820.08 km) |
| Grand Forks to Civitella in Val di Chiana | 4,789.25 mi (7,707.56 km) |
| Grand Forks to Clusone | 4,605.83 mi (7,412.37 km) |
| Grand Forks to Coccaglio | 4,622.64 mi (7,439.41 km) |
| Grand Forks to Codigoro | 4,730.89 mi (7,613.63 km) |
| Grand Forks to Codogno | 4,633.39 mi (7,456.72 km) |
| Grand Forks to Codroipo | 4,702.08 mi (7,567.26 km) |
| Grand Forks to Cogoleto | 4,635.21 mi (7,459.65 km) |
| Grand Forks to Colle di Val d'Elsa | 4,770.19 mi (7,676.88 km) |
| Grand Forks to Colle Salvetti | 4,737.83 mi (7,624.79 km) |
| Grand Forks to Collecchio | 4,671.15 mi (7,517.48 km) |
| Grand Forks to Colleferro | 4,919.85 mi (7,917.74 km) |
