| Holbrook to Collegno | 3,915.17 mi (6,300.86 km) |
| Holbrook to Cologno al Serio | 3,991.39 mi (6,423.52 km) |
| Holbrook to Cologno Monzese | 3,974.99 mi (6,397.13 km) |
| Holbrook to Colorno | 4,041.71 mi (6,504.50 km) |
| Holbrook to Comacchio | 4,126.88 mi (6,641.56 km) |
| Holbrook to Comiso | 4,514.11 mi (7,264.76 km) |
| Holbrook to Como | 3,957.87 mi (6,369.58 km) |
| Holbrook to Concordia Sagittaria | 4,119.49 mi (6,629.68 km) |
| Holbrook to Concorezzo | 3,975.54 mi (6,398.02 km) |
| Holbrook to Conegliano | 4,092.17 mi (6,585.71 km) |
| Holbrook to Conselice | 4,117.99 mi (6,627.26 km) |
| Holbrook to Conselve | 4,095.52 mi (6,591.10 km) |
| Holbrook to Conversano | 4,474.16 mi (7,200.46 km) |
| Holbrook to Copertino | 4,541.68 mi (7,309.12 km) |
| Holbrook to Copparo | 4,105.17 mi (6,606.63 km) |
