| Harrow to Cognac | 406.81 mi (654.69 km) |
| Harrow to Cogolin | 658.63 mi (1,059.97 km) |
| Harrow to Colmar | 419.61 mi (675.29 km) |
| Harrow to Colombes | 216.66 mi (348.69 km) |
| Harrow to Colomiers | 556.17 mi (895.06 km) |
| Harrow to Combs-la-Ville | 238.91 mi (384.49 km) |
| Harrow to Comines | 156.00 mi (251.06 km) |
| Harrow to Compiegne | 204.55 mi (329.19 km) |
| Harrow to Concarneau | 301.75 mi (485.62 km) |
| Harrow to Conde-sur-l'Escaut | 188.19 mi (302.86 km) |
| Harrow to Conflans-Sainte-Honorine | 208.61 mi (335.73 km) |
| Harrow to Corbas | 473.53 mi (762.07 km) |
| Harrow to Corbeil-Essonnes | 240.41 mi (386.90 km) |
| Harrow to Cormeilles-en-Parisis | 212.50 mi (341.98 km) |
| Harrow to Cosne sur Loire | 323.49 mi (520.60 km) |
