| Sumner to Cadiz | 5,428.36 mi (8,736.10 km) |
| Sumner to Calafell | 5,424.74 mi (8,730.28 km) |
| Sumner to Calahorra | 5,255.85 mi (8,458.47 km) |
| Sumner to Calasparra | 5,489.30 mi (8,834.18 km) |
| Sumner to Calatayud | 5,318.58 mi (8,559.43 km) |
| Sumner to Caldas de Montbuy | 5,418.07 mi (8,719.54 km) |
| Sumner to Caldas de Reyes | 5,025.84 mi (8,088.31 km) |
| Sumner to Calella | 5,433.60 mi (8,744.53 km) |
| Sumner to Callosa de Segura | 5,521.70 mi (8,886.32 km) |
| Sumner to Calpe | 5,521.78 mi (8,886.45 km) |
| Sumner to Calvia | 5,545.60 mi (8,924.78 km) |
| Sumner to Camas | 5,390.60 mi (8,675.33 km) |
| Sumner to Cambados | 5,025.86 mi (8,088.33 km) |
| Sumner to Cambre | 5,000.25 mi (8,047.13 km) |
| Sumner to Cambrils | 5,416.84 mi (8,717.57 km) |
