| Olivenza to Colchester | 990.48 mi (1,594.03 km) |
| Olivenza to Coleford | 930.94 mi (1,498.20 km) |
| Olivenza to Colne | 1,073.54 mi (1,727.69 km) |
| Olivenza to Colwyn Bay | 1,021.87 mi (1,644.55 km) |
| Olivenza to Congleton | 1,026.77 mi (1,652.43 km) |
| Olivenza to Conisbrough | 1,059.27 mi (1,704.72 km) |
| Olivenza to Connahs Quay | 1,022.27 mi (1,645.19 km) |
| Olivenza to Consett | 1,143.55 mi (1,840.36 km) |
| Olivenza to Conwy | 1,020.24 mi (1,641.91 km) |
| Olivenza to Cookstown | 1,102.94 mi (1,775.01 km) |
| Olivenza to Corby | 1,001.59 mi (1,611.90 km) |
| Olivenza to Corfe Mullen | 870.90 mi (1,401.57 km) |
| Olivenza to Corsham | 912.37 mi (1,468.32 km) |
| Olivenza to Coseley | 987.53 mi (1,589.27 km) |
| Olivenza to Cosham | 889.83 mi (1,432.05 km) |
