| Ronkonkoma to Cockermouth | 3,233.74 mi (5,204.20 km) |
| Ronkonkoma to Colchester | 3,454.97 mi (5,560.24 km) |
| Ronkonkoma to Coleford | 3,313.48 mi (5,332.53 km) |
| Ronkonkoma to Colne | 3,293.52 mi (5,300.41 km) |
| Ronkonkoma to Colwyn Bay | 3,242.57 mi (5,218.41 km) |
| Ronkonkoma to Congleton | 3,304.16 mi (5,317.53 km) |
| Ronkonkoma to Conisbrough | 3,337.77 mi (5,371.63 km) |
| Ronkonkoma to Connahs Quay | 3,269.56 mi (5,261.84 km) |
| Ronkonkoma to Consett | 3,290.10 mi (5,294.91 km) |
| Ronkonkoma to Conwy | 3,237.53 mi (5,210.30 km) |
| Ronkonkoma to Cookstown | 3,101.61 mi (4,991.57 km) |
| Ronkonkoma to Corby | 3,377.80 mi (5,436.04 km) |
| Ronkonkoma to Corfe Mullen | 3,358.54 mi (5,405.05 km) |
| Ronkonkoma to Corsham | 3,338.18 mi (5,372.29 km) |
| Ronkonkoma to Coseley | 3,320.82 mi (5,344.34 km) |
