| Alpena to Cockermouth | 3,427.93 mi (5,516.73 km) |
| Alpena to Colchester | 3,670.63 mi (5,907.31 km) |
| Alpena to Coleford | 3,540.70 mi (5,698.20 km) |
| Alpena to Colne | 3,494.71 mi (5,624.19 km) |
| Alpena to Colwyn Bay | 3,454.67 mi (5,559.75 km) |
| Alpena to Congleton | 3,513.88 mi (5,655.05 km) |
| Alpena to Conisbrough | 3,540.98 mi (5,698.66 km) |
| Alpena to Connahs Quay | 3,480.85 mi (5,601.89 km) |
| Alpena to Consett | 3,478.15 mi (5,597.54 km) |
| Alpena to Conwy | 3,450.09 mi (5,552.38 km) |
| Alpena to Cookstown | 3,303.85 mi (5,317.04 km) |
| Alpena to Corby | 3,591.31 mi (5,779.66 km) |
| Alpena to Corfe Mullen | 3,595.91 mi (5,787.06 km) |
| Alpena to Corsham | 3,568.35 mi (5,742.70 km) |
| Alpena to Coseley | 3,537.52 mi (5,693.09 km) |
