| Springboro to Cascais | 3,885.46 mi (6,253.05 km) |
| Springboro to Castelo Branco | 3,942.71 mi (6,345.18 km) |
| Springboro to Castro Daire | 3,889.20 mi (6,259.06 km) |
| Springboro to Celorico de Basto | 3,871.62 mi (6,230.78 km) |
| Springboro to Chamusca | 3,910.28 mi (6,292.99 km) |
| Springboro to Chaves | 3,885.68 mi (6,253.39 km) |
| Springboro to Cinfaes | 3,873.81 mi (6,234.29 km) |
| Springboro to Coimbra | 3,886.56 mi (6,254.81 km) |
| Springboro to Condeixa-a-Nova | 3,886.06 mi (6,254.00 km) |
| Springboro to Corroios | 3,900.93 mi (6,277.94 km) |
| Springboro to Coruche | 3,920.35 mi (6,309.19 km) |
| Springboro to Costa de Caparica | 3,895.91 mi (6,269.87 km) |
| Springboro to Covilha | 3,928.34 mi (6,322.05 km) |
| Springboro to Eiras | 3,885.86 mi (6,253.70 km) |
| Springboro to Elvas | 3,989.13 mi (6,419.89 km) |
