| Harpenden to Chenove | 394.13 mi (634.30 km) |
| Harpenden to Cherbourg | 160.47 mi (258.25 km) |
| Harpenden to Chevigny-Saint-Sauveur | 397.06 mi (639.01 km) |
| Harpenden to Chevilly-Larue | 242.25 mi (389.87 km) |
| Harpenden to Chilly-Mazarin | 245.27 mi (394.73 km) |
| Harpenden to Choisy-le-Roi | 243.68 mi (392.16 km) |
| Harpenden to Cholet | 329.56 mi (530.37 km) |
| Harpenden to Clamart | 238.17 mi (383.30 km) |
| Harpenden to Claye-Souilly | 239.37 mi (385.23 km) |
| Harpenden to Clermont | 207.56 mi (334.03 km) |
| Harpenden to Clermont-Ferrand | 445.15 mi (716.40 km) |
| Harpenden to Clermont-l'Herault | 592.39 mi (953.37 km) |
| Harpenden to Clichy | 232.87 mi (374.77 km) |
| Harpenden to Clichy-sous-Bois | 238.18 mi (383.32 km) |
| Harpenden to Cluses | 506.66 mi (815.38 km) |
