| Idanha-a-Nova to Costessey | 966.94 mi (1,556.14 km) |
| Idanha-a-Nova to Cottingham | 1,009.62 mi (1,624.82 km) |
| Idanha-a-Nova to Coulsdon | 858.35 mi (1,381.38 km) |
| Idanha-a-Nova to Coventry | 904.76 mi (1,456.07 km) |
| Idanha-a-Nova to Cowdenbeath | 1,132.70 mi (1,822.91 km) |
| Idanha-a-Nova to Cowes | 802.02 mi (1,290.72 km) |
| Idanha-a-Nova to Cowley | 864.95 mi (1,392.00 km) |
| Idanha-a-Nova to Cowley | 865.58 mi (1,393.02 km) |
| Idanha-a-Nova to Cramlington | 1,079.61 mi (1,737.46 km) |
| Idanha-a-Nova to Cranleigh | 840.46 mi (1,352.59 km) |
| Idanha-a-Nova to Crawley | 844.29 mi (1,358.75 km) |
| Idanha-a-Nova to Crayford | 872.42 mi (1,404.02 km) |
| Idanha-a-Nova to Crewe | 938.36 mi (1,510.14 km) |
| Idanha-a-Nova to Crigglestone | 985.40 mi (1,585.85 km) |
| Idanha-a-Nova to Cromer | 985.18 mi (1,585.49 km) |
