| Portsmouth to Brezovica | 782.17 mi (1,258.78 km) |
| Portsmouth to Cankova | 826.33 mi (1,329.86 km) |
| Portsmouth to Celje | 810.13 mi (1,303.78 km) |
| Portsmouth to Cerklje na Gorenjskem | 777.08 mi (1,250.58 km) |
| Portsmouth to Cerknica | 787.73 mi (1,267.72 km) |
| Portsmouth to Cerkno | 760.80 mi (1,224.39 km) |
| Portsmouth to Cerkvenjak | 827.89 mi (1,332.37 km) |
| Portsmouth to Cirkulane | 837.12 mi (1,347.22 km) |
| Portsmouth to Crensovci | 842.50 mi (1,355.87 km) |
| Portsmouth to Crna na Koroskem | 784.87 mi (1,263.13 km) |
| Portsmouth to Crnomelj | 830.03 mi (1,335.81 km) |
| Portsmouth to Destrnik | 827.56 mi (1,331.82 km) |
| Portsmouth to Divaca | 776.08 mi (1,248.98 km) |
| Portsmouth to Dobje | 818.76 mi (1,317.66 km) |
| Portsmouth to Dobrna | 805.14 mi (1,295.74 km) |
