| Comstock Park to Cascais | 3,854.73 mi (6,203.59 km) |
| Comstock Park to Castelo Branco | 3,903.13 mi (6,281.49 km) |
| Comstock Park to Castro Daire | 3,845.47 mi (6,188.69 km) |
| Comstock Park to Celorico de Basto | 3,825.79 mi (6,157.01 km) |
| Comstock Park to Chamusca | 3,874.73 mi (6,235.78 km) |
| Comstock Park to Chaves | 3,837.23 mi (6,175.42 km) |
| Comstock Park to Cinfaes | 3,829.53 mi (6,163.03 km) |
| Comstock Park to Coimbra | 3,846.94 mi (6,191.05 km) |
| Comstock Park to Condeixa-a-Nova | 3,847.01 mi (6,191.16 km) |
| Comstock Park to Corroios | 3,870.07 mi (6,228.27 km) |
| Comstock Park to Coruche | 3,886.69 mi (6,255.02 km) |
| Comstock Park to Costa de Caparica | 3,865.08 mi (6,220.25 km) |
| Comstock Park to Covilha | 3,886.64 mi (6,254.94 km) |
| Comstock Park to Eiras | 3,846.10 mi (6,189.69 km) |
| Comstock Park to Elvas | 3,953.17 mi (6,362.02 km) |
