| Gretz-Armainvilliers to Clay Cross | 354.76 mi (570.94 km) |
| Gretz-Armainvilliers to Clayton | 399.77 mi (643.37 km) |
| Gretz-Armainvilliers to Clayton le Moors | 412.01 mi (663.06 km) |
| Gretz-Armainvilliers to Cleckheaton | 394.40 mi (634.73 km) |
| Gretz-Armainvilliers to Cleethorpes | 353.22 mi (568.46 km) |
| Gretz-Armainvilliers to Clevedon | 309.84 mi (498.64 km) |
| Gretz-Armainvilliers to Clifton | 334.36 mi (538.10 km) |
| Gretz-Armainvilliers to Clifton | 397.31 mi (639.40 km) |
| Gretz-Armainvilliers to Cliftonville | 192.15 mi (309.24 km) |
| Gretz-Armainvilliers to Clitheroe | 417.67 mi (672.18 km) |
| Gretz-Armainvilliers to Clydebank | 578.49 mi (930.99 km) |
| Gretz-Armainvilliers to Coalville | 328.41 mi (528.52 km) |
| Gretz-Armainvilliers to Coatbridge | 568.34 mi (914.65 km) |
| Gretz-Armainvilliers to Cobham | 226.74 mi (364.90 km) |
| Gretz-Armainvilliers to Cockermouth | 484.84 mi (780.28 km) |
