| Seal Beach to Collegno | 6,015.28 mi (9,680.67 km) |
| Seal Beach to Cologno al Serio | 6,058.21 mi (9,749.75 km) |
| Seal Beach to Cologno Monzese | 6,047.59 mi (9,732.66 km) |
| Seal Beach to Colorno | 6,113.92 mi (9,839.40 km) |
| Seal Beach to Comacchio | 6,182.98 mi (9,950.55 km) |
| Seal Beach to Comiso | 6,680.07 mi (10,750.53 km) |
| Seal Beach to Como | 6,026.87 mi (9,699.30 km) |
| Seal Beach to Concordia Sagittaria | 6,146.32 mi (9,891.55 km) |
| Seal Beach to Concorezzo | 6,046.27 mi (9,730.53 km) |
| Seal Beach to Conegliano | 6,123.09 mi (9,854.17 km) |
| Seal Beach to Conselice | 6,181.80 mi (9,948.65 km) |
| Seal Beach to Conselve | 6,144.71 mi (9,888.95 km) |
| Seal Beach to Conversano | 6,539.79 mi (10,524.78 km) |
| Seal Beach to Copertino | 6,607.63 mi (10,633.95 km) |
| Seal Beach to Copparo | 6,161.41 mi (9,915.83 km) |
