| Waltham to Cividale del Friuli | 3,991.66 mi (6,423.95 km) |
| Waltham to Civita Castellana | 4,080.90 mi (6,567.58 km) |
| Waltham to Civitanova Marche | 4,102.37 mi (6,602.12 km) |
| Waltham to Civitavecchia | 4,061.15 mi (6,535.79 km) |
| Waltham to Civitella in Val di Chiana | 4,011.18 mi (6,455.37 km) |
| Waltham to Clusone | 3,852.36 mi (6,199.77 km) |
| Waltham to Coccaglio | 3,863.98 mi (6,218.47 km) |
| Waltham to Codigoro | 3,979.49 mi (6,404.37 km) |
| Waltham to Codogno | 3,865.48 mi (6,220.90 km) |
| Waltham to Codroipo | 3,977.39 mi (6,400.99 km) |
| Waltham to Cogoleto | 3,844.99 mi (6,187.91 km) |
| Waltham to Colle di Val d'Elsa | 3,986.43 mi (6,415.54 km) |
| Waltham to Colle Salvetti | 3,951.29 mi (6,358.99 km) |
| Waltham to Collecchio | 3,901.00 mi (6,278.06 km) |
| Waltham to Colleferro | 4,127.76 mi (6,642.98 km) |
