| Walnut Creek to Collegno | 5,902.49 mi (9,499.14 km) |
| Walnut Creek to Cologno al Serio | 5,936.55 mi (9,553.96 km) |
| Walnut Creek to Cologno Monzese | 5,927.52 mi (9,539.42 km) |
| Walnut Creek to Colorno | 5,992.42 mi (9,643.87 km) |
| Walnut Creek to Comacchio | 6,056.31 mi (9,746.69 km) |
| Walnut Creek to Comiso | 6,571.95 mi (10,576.53 km) |
| Walnut Creek to Como | 5,906.35 mi (9,505.36 km) |
| Walnut Creek to Concordia Sagittaria | 6,013.65 mi (9,678.04 km) |
| Walnut Creek to Concorezzo | 5,925.78 mi (9,536.61 km) |
| Walnut Creek to Conegliano | 5,991.83 mi (9,642.91 km) |
| Walnut Creek to Conselice | 6,056.97 mi (9,747.75 km) |
| Walnut Creek to Conselve | 6,017.19 mi (9,683.73 km) |
| Walnut Creek to Conversano | 6,408.38 mi (10,313.29 km) |
| Walnut Creek to Copertino | 6,474.98 mi (10,420.48 km) |
| Walnut Creek to Copparo | 6,035.20 mi (9,712.71 km) |
