| Castricum to Colchester | 165.65 mi (266.59 km) |
| Castricum to Coleford | 312.90 mi (503.57 km) |
| Castricum to Colne | 297.05 mi (478.06 km) |
| Castricum to Colwyn Bay | 352.06 mi (566.59 km) |
| Castricum to Congleton | 290.17 mi (466.98 km) |
| Castricum to Conisbrough | 253.17 mi (407.44 km) |
| Castricum to Connahs Quay | 325.15 mi (523.28 km) |
| Castricum to Consett | 309.45 mi (498.02 km) |
| Castricum to Conwy | 357.36 mi (575.11 km) |
| Castricum to Cookstown | 489.19 mi (787.27 km) |
| Castricum to Corby | 225.68 mi (363.19 km) |
| Castricum to Corfe Mullen | 311.61 mi (501.49 km) |
| Castricum to Corsham | 301.41 mi (485.06 km) |
| Castricum to Coseley | 283.48 mi (456.21 km) |
| Castricum to Cosham | 272.28 mi (438.20 km) |
