| Barstow to Cividale del Friuli | 6,049.83 mi (9,736.26 km) |
| Barstow to Civita Castellana | 6,222.27 mi (10,013.77 km) |
| Barstow to Civitanova Marche | 6,210.35 mi (9,994.59 km) |
| Barstow to Civitavecchia | 6,212.85 mi (9,998.62 km) |
| Barstow to Civitella in Val di Chiana | 6,140.21 mi (9,881.71 km) |
| Barstow to Clusone | 5,954.16 mi (9,582.29 km) |
| Barstow to Coccaglio | 5,971.73 mi (9,610.58 km) |
| Barstow to Codigoro | 6,077.52 mi (9,780.82 km) |
| Barstow to Codogno | 5,984.01 mi (9,630.33 km) |
| Barstow to Codroipo | 6,043.58 mi (9,726.20 km) |
| Barstow to Cogoleto | 5,989.43 mi (9,639.05 km) |
| Barstow to Colle di Val d'Elsa | 6,122.28 mi (9,852.85 km) |
| Barstow to Colle Salvetti | 6,090.64 mi (9,801.94 km) |
| Barstow to Collecchio | 6,021.80 mi (9,691.15 km) |
| Barstow to Colleferro | 6,272.09 mi (10,093.95 km) |
