| Castro Valley to Casamassima | 6,416.19 mi (10,325.86 km) |
| Castro Valley to Casandrino | 6,342.93 mi (10,207.95 km) |
| Castro Valley to Casapulla | 6,336.16 mi (10,197.06 km) |
| Castro Valley to Casarano | 6,505.26 mi (10,469.20 km) |
| Castro Valley to Casatenovo | 5,931.07 mi (9,545.14 km) |
| Castro Valley to Casciana Terme | 6,090.14 mi (9,801.14 km) |
| Castro Valley to Cascina | 6,079.41 mi (9,783.87 km) |
| Castro Valley to Caselle Torinese | 5,911.11 mi (9,513.01 km) |
| Castro Valley to Caserta | 6,337.58 mi (10,199.35 km) |
| Castro Valley to Casier | 6,017.59 mi (9,684.38 km) |
| Castro Valley to Casorate Primo | 5,943.72 mi (9,565.49 km) |
| Castro Valley to Casoria | 6,346.28 mi (10,213.35 km) |
| Castro Valley to Cassano al Ionio | 6,468.36 mi (10,409.82 km) |
| Castro Valley to Cassano d'Adda | 5,946.13 mi (9,569.37 km) |
| Castro Valley to Cassano delle Murge | 6,416.05 mi (10,325.63 km) |
