| Siano to Colchester | 1,006.38 mi (1,619.61 km) |
| Siano to Coleford | 1,116.97 mi (1,797.59 km) |
| Siano to Colne | 1,192.82 mi (1,919.66 km) |
| Siano to Colwyn Bay | 1,215.60 mi (1,956.32 km) |
| Siano to Congleton | 1,162.43 mi (1,870.76 km) |
| Siano to Conisbrough | 1,146.66 mi (1,845.37 km) |
| Siano to Connahs Quay | 1,191.67 mi (1,917.81 km) |
| Siano to Consett | 1,230.30 mi (1,979.97 km) |
| Siano to Conwy | 1,219.43 mi (1,962.49 km) |
| Siano to Cookstown | 1,370.84 mi (2,206.15 km) |
| Siano to Corby | 1,084.14 mi (1,744.75 km) |
| Siano to Corfe Mullen | 1,055.20 mi (1,698.19 km) |
| Siano to Corsham | 1,087.52 mi (1,750.19 km) |
| Siano to Coseley | 1,131.06 mi (1,820.27 km) |
| Siano to Cosham | 1,024.23 mi (1,648.34 km) |
