| Diedorf to Cologno al Serio | 197.66 mi (318.10 km) |
| Diedorf to Cologno Monzese | 207.19 mi (333.44 km) |
| Diedorf to Colorno | 236.77 mi (381.04 km) |
| Diedorf to Comacchio | 261.01 mi (420.06 km) |
| Diedorf to Comiso | 811.12 mi (1,305.37 km) |
| Diedorf to Como | 192.46 mi (309.73 km) |
| Diedorf to Concordia Sagittaria | 203.63 mi (327.72 km) |
| Diedorf to Concorezzo | 202.29 mi (325.55 km) |
| Diedorf to Conegliano | 184.77 mi (297.36 km) |
| Diedorf to Conselice | 269.67 mi (434.00 km) |
| Diedorf to Conselve | 221.53 mi (356.52 km) |
| Diedorf to Conversano | 597.54 mi (961.65 km) |
| Diedorf to Copertino | 663.84 mi (1,068.35 km) |
| Diedorf to Copparo | 243.68 mi (392.16 km) |
| Diedorf to Corato | 568.73 mi (915.29 km) |
