| Irthlingborough to Civril | 1,744.59 mi (2,807.65 km) |
| Irthlingborough to Cizre | 2,295.42 mi (3,694.12 km) |
| Irthlingborough to Cobanlar | 1,767.00 mi (2,843.71 km) |
| Irthlingborough to Corlu | 1,536.69 mi (2,473.07 km) |
| Irthlingborough to Corum | 1,854.41 mi (2,984.38 km) |
| Irthlingborough to Cukurca | 2,358.73 mi (3,796.01 km) |
| Irthlingborough to Cukurcayir | 2,035.96 mi (3,276.55 km) |
| Irthlingborough to Cumayeri | 1,675.92 mi (2,697.13 km) |
| Irthlingborough to Cumra | 1,899.28 mi (3,056.60 km) |
| Irthlingborough to Cungus | 2,135.44 mi (3,436.66 km) |
| Irthlingborough to Dargecit | 2,266.44 mi (3,647.48 km) |
| Irthlingborough to Davutlar | 1,677.94 mi (2,700.38 km) |
| Irthlingborough to Demirozu | 2,076.01 mi (3,341.02 km) |
| Irthlingborough to Demre | 1,854.53 mi (2,984.58 km) |
| Irthlingborough to Denizciler | 2,081.35 mi (3,349.61 km) |
