| Sumter to Collegno | 4,519.40 mi (7,273.28 km) |
| Sumter to Cologno al Serio | 4,598.62 mi (7,400.76 km) |
| Sumter to Cologno Monzese | 4,581.76 mi (7,373.62 km) |
| Sumter to Colorno | 4,647.99 mi (7,480.22 km) |
| Sumter to Comacchio | 4,734.14 mi (7,618.86 km) |
| Sumter to Comiso | 5,103.55 mi (8,213.37 km) |
| Sumter to Como | 4,565.14 mi (7,346.88 km) |
| Sumter to Concordia Sagittaria | 4,729.51 mi (7,611.42 km) |
| Sumter to Concorezzo | 4,582.49 mi (7,374.81 km) |
| Sumter to Conegliano | 4,702.03 mi (7,567.19 km) |
| Sumter to Conselice | 4,724.54 mi (7,603.42 km) |
| Sumter to Conselve | 4,703.69 mi (7,569.85 km) |
| Sumter to Conversano | 5,077.73 mi (8,171.81 km) |
| Sumter to Copertino | 5,144.67 mi (8,279.54 km) |
| Sumter to Copparo | 4,712.59 mi (7,584.17 km) |
