| Grass Valley to Cividale del Friuli | 5,904.40 mi (9,502.22 km) |
| Grass Valley to Civita Castellana | 6,094.13 mi (9,807.55 km) |
| Grass Valley to Civitanova Marche | 6,073.82 mi (9,774.87 km) |
| Grass Valley to Civitavecchia | 6,087.65 mi (9,797.13 km) |
| Grass Valley to Civitella in Val di Chiana | 6,010.42 mi (9,672.84 km) |
| Grass Valley to Clusone | 5,821.19 mi (9,368.29 km) |
| Grass Valley to Coccaglio | 5,839.88 mi (9,398.38 km) |
| Grass Valley to Codigoro | 5,941.13 mi (9,561.32 km) |
| Grass Valley to Codogno | 5,854.61 mi (9,422.09 km) |
| Grass Valley to Codroipo | 5,900.17 mi (9,495.41 km) |
| Grass Valley to Cogoleto | 5,866.61 mi (9,441.39 km) |
| Grass Valley to Colle di Val d'Elsa | 5,994.61 mi (9,647.40 km) |
| Grass Valley to Colle Salvetti | 5,964.51 mi (9,598.95 km) |
| Grass Valley to Collecchio | 5,892.23 mi (9,482.63 km) |
| Grass Valley to Colleferro | 6,143.78 mi (9,887.47 km) |
