| Sumner to Brezovica | 5,481.07 mi (8,820.93 km) |
| Sumner to Cankova | 5,474.06 mi (8,809.65 km) |
| Sumner to Celje | 5,487.11 mi (8,830.65 km) |
| Sumner to Cerklje na Gorenjskem | 5,468.73 mi (8,801.08 km) |
| Sumner to Cerknica | 5,493.35 mi (8,840.70 km) |
| Sumner to Cerkno | 5,464.80 mi (8,794.75 km) |
| Sumner to Cerkvenjak | 5,481.82 mi (8,822.14 km) |
| Sumner to Cirkulane | 5,496.58 mi (8,845.90 km) |
| Sumner to Crensovci | 5,488.94 mi (8,833.60 km) |
| Sumner to Crna na Koroskem | 5,463.47 mi (8,792.61 km) |
| Sumner to Crnomelj | 5,525.96 mi (8,893.18 km) |
| Sumner to Destrnik | 5,484.96 mi (8,827.20 km) |
| Sumner to Divaca | 5,491.39 mi (8,837.54 km) |
| Sumner to Dobje | 5,495.98 mi (8,844.93 km) |
| Sumner to Dobrna | 5,480.01 mi (8,819.22 km) |
