| Gahanna to Benavente | 3,827.43 mi (6,159.65 km) |
| Gahanna to Bombarral | 3,801.11 mi (6,117.30 km) |
| Gahanna to Bougado | 3,767.47 mi (6,063.16 km) |
| Gahanna to Braga | 3,767.74 mi (6,063.59 km) |
| Gahanna to Braganca | 3,837.62 mi (6,176.05 km) |
| Gahanna to Cabeceiras de Basto | 3,787.12 mi (6,094.78 km) |
| Gahanna to Cacem | 3,809.02 mi (6,130.02 km) |
| Gahanna to Cadaval | 3,804.83 mi (6,123.28 km) |
| Gahanna to Caldas da Rainha | 3,797.81 mi (6,111.98 km) |
| Gahanna to Calheta | 3,607.16 mi (5,805.17 km) |
| Gahanna to Camara de Lobos | 3,617.79 mi (5,822.27 km) |
| Gahanna to Canico | 3,626.10 mi (5,835.65 km) |
| Gahanna to Cantanhede | 3,795.24 mi (6,107.85 km) |
| Gahanna to Carregal do Sal | 3,820.75 mi (6,148.91 km) |
| Gahanna to Cartaxo | 3,822.58 mi (6,151.85 km) |
