| Guymon to Cascais | 4,798.33 mi (7,722.16 km) |
| Guymon to Castelo Branco | 4,845.58 mi (7,798.21 km) |
| Guymon to Castro Daire | 4,787.07 mi (7,704.05 km) |
| Guymon to Celorico de Basto | 4,766.86 mi (7,671.53 km) |
| Guymon to Chamusca | 4,817.84 mi (7,753.57 km) |
| Guymon to Chaves | 4,777.54 mi (7,688.71 km) |
| Guymon to Cinfaes | 4,771.01 mi (7,678.19 km) |
| Guymon to Coimbra | 4,789.42 mi (7,707.82 km) |
| Guymon to Condeixa-a-Nova | 4,789.59 mi (7,708.10 km) |
| Guymon to Corroios | 4,813.65 mi (7,746.82 km) |
| Guymon to Coruche | 4,830.01 mi (7,773.16 km) |
| Guymon to Costa de Caparica | 4,808.67 mi (7,738.80 km) |
| Guymon to Covilha | 4,828.66 mi (7,770.99 km) |
| Guymon to Eiras | 4,788.54 mi (7,706.42 km) |
| Guymon to Elvas | 4,896.19 mi (7,879.66 km) |
