| Herndon to Cassina de' Pecchi | 4,238.44 mi (6,821.12 km) |
| Herndon to Cassino | 4,570.57 mi (7,355.63 km) |
| Herndon to Castagneto Carducci | 4,369.81 mi (7,032.53 km) |
| Herndon to Castano Primo | 4,211.65 mi (6,778.00 km) |
| Herndon to Castel Bolognese | 4,382.69 mi (7,053.25 km) |
| Herndon to Castel Gandolfo | 4,509.62 mi (7,257.54 km) |
| Herndon to Castel Goffredo | 4,292.97 mi (6,908.87 km) |
| Herndon to Castel Maggiore | 4,355.58 mi (7,009.63 km) |
| Herndon to Castel Mella | 4,272.47 mi (6,875.88 km) |
| Herndon to Castel San Giorgio | 4,635.10 mi (7,459.48 km) |
| Herndon to Castel San Giovanni | 4,256.41 mi (6,850.03 km) |
| Herndon to Castel San Pietro Terme | 4,370.53 mi (7,033.70 km) |
| Herndon to Castel Volturno | 4,590.68 mi (7,387.99 km) |
| Herndon to Castelbuono | 4,714.97 mi (7,588.01 km) |
| Herndon to Casteldaccia | 4,684.71 mi (7,539.30 km) |
