| Holtsville to Collegno | 3,913.38 mi (6,297.98 km) |
| Holtsville to Cologno al Serio | 3,989.59 mi (6,420.63 km) |
| Holtsville to Cologno Monzese | 3,973.20 mi (6,394.24 km) |
| Holtsville to Colorno | 4,039.91 mi (6,501.61 km) |
| Holtsville to Comacchio | 4,125.08 mi (6,638.67 km) |
| Holtsville to Comiso | 4,512.35 mi (7,261.93 km) |
| Holtsville to Como | 3,956.07 mi (6,366.69 km) |
| Holtsville to Concordia Sagittaria | 4,117.69 mi (6,626.77 km) |
| Holtsville to Concorezzo | 3,973.75 mi (6,395.13 km) |
| Holtsville to Conegliano | 4,090.37 mi (6,582.81 km) |
| Holtsville to Conselice | 4,116.19 mi (6,624.37 km) |
| Holtsville to Conselve | 4,093.72 mi (6,588.20 km) |
| Holtsville to Conversano | 4,472.37 mi (7,197.58 km) |
| Holtsville to Copertino | 4,539.89 mi (7,306.25 km) |
| Holtsville to Copparo | 4,103.37 mi (6,603.74 km) |
