| Holbrook to Cividale del Friuli | 4,132.85 mi (6,651.18 km) |
| Holbrook to Civita Castellana | 4,219.22 mi (6,790.19 km) |
| Holbrook to Civitanova Marche | 4,241.84 mi (6,826.57 km) |
| Holbrook to Civitavecchia | 4,199.11 mi (6,757.82 km) |
| Holbrook to Civitella in Val di Chiana | 4,150.12 mi (6,678.97 km) |
| Holbrook to Clusone | 3,992.56 mi (6,425.41 km) |
| Holbrook to Coccaglio | 4,003.97 mi (6,443.76 km) |
| Holbrook to Codigoro | 4,119.54 mi (6,629.77 km) |
| Holbrook to Codogno | 4,005.11 mi (6,445.61 km) |
| Holbrook to Codroipo | 4,118.39 mi (6,627.91 km) |
| Holbrook to Cogoleto | 3,983.73 mi (6,411.20 km) |
| Holbrook to Colle di Val d'Elsa | 4,125.17 mi (6,638.82 km) |
| Holbrook to Colle Salvetti | 4,089.98 mi (6,582.19 km) |
| Holbrook to Collecchio | 4,040.48 mi (6,502.52 km) |
| Holbrook to Colleferro | 4,265.85 mi (6,865.23 km) |
