| Seia to Calne | 808.26 mi (1,300.77 km) |
| Seia to Cam | 819.70 mi (1,319.17 km) |
| Seia to Camberley | 824.10 mi (1,326.26 km) |
| Seia to Camborne | 686.39 mi (1,104.64 km) |
| Seia to Cambridge | 894.40 mi (1,439.39 km) |
| Seia to Cambuslang | 1,075.90 mi (1,731.49 km) |
| Seia to Canford Cliffs | 762.48 mi (1,227.10 km) |
| Seia to Cannock | 888.86 mi (1,430.48 km) |
| Seia to Canterbury | 859.67 mi (1,383.51 km) |
| Seia to Carlisle | 1,023.35 mi (1,646.92 km) |
| Seia to Carlton Colville | 942.20 mi (1,516.32 km) |
| Seia to Carluke | 1,072.50 mi (1,726.02 km) |
| Seia to Carnoustie | 1,133.51 mi (1,824.21 km) |
| Seia to Carshalton | 837.38 mi (1,347.63 km) |
| Seia to Carterton | 835.61 mi (1,344.78 km) |
