| Irthlingborough to Crest Hill (Illinois) | 3,935.88 mi (6,334.19 km) |
| Irthlingborough to Crestview (Florida) | 4,407.66 mi (7,093.45 km) |
| Irthlingborough to Crestwood (Illinois) | 3,918.38 mi (6,306.03 km) |
| Irthlingborough to Crestwood (Missouri) | 4,167.10 mi (6,706.30 km) |
| Irthlingborough to Creve Coeur (Missouri) | 4,164.40 mi (6,701.95 km) |
| Irthlingborough to Crofton (Maryland) | 3,608.19 mi (5,806.81 km) |
| Irthlingborough to Crossville (Tennessee) | 4,086.66 mi (6,576.84 km) |
| Irthlingborough to Crowley (Louisiana) | 4,666.27 mi (7,509.63 km) |
| Irthlingborough to Crowley (Texas) | 4,736.36 mi (7,622.44 km) |
| Irthlingborough to Crown Point (Indiana) | 3,914.41 mi (6,299.63 km) |
| Irthlingborough to Crystal (Minnesota) | 3,963.29 mi (6,378.30 km) |
| Irthlingborough to Crystal Lake (Illinois) | 3,913.01 mi (6,297.39 km) |
| Irthlingborough to Cudahy (California) | 5,390.72 mi (8,675.53 km) |
| Irthlingborough to Cudahy (Wisconsin) | 3,861.96 mi (6,215.23 km) |
| Irthlingborough to Cullman (Alabama) | 4,245.92 mi (6,833.14 km) |
