| Sumner to Cascais | 5,204.42 mi (8,375.70 km) |
| Sumner to Castelo Branco | 5,211.15 mi (8,386.54 km) |
| Sumner to Castro Daire | 5,139.04 mi (8,270.49 km) |
| Sumner to Celorico de Basto | 5,111.25 mi (8,225.76 km) |
| Sumner to Chamusca | 5,202.41 mi (8,372.47 km) |
| Sumner to Chaves | 5,109.92 mi (8,223.62 km) |
| Sumner to Cinfaes | 5,121.76 mi (8,242.67 km) |
| Sumner to Coimbra | 5,158.72 mi (8,302.16 km) |
| Sumner to Condeixa-a-Nova | 5,161.30 mi (8,306.31 km) |
| Sumner to Corroios | 5,218.19 mi (8,397.86 km) |
| Sumner to Coruche | 5,221.73 mi (8,403.56 km) |
| Sumner to Costa de Caparica | 5,213.66 mi (8,390.57 km) |
| Sumner to Covilha | 5,186.33 mi (8,346.58 km) |
| Sumner to Eiras | 5,157.26 mi (8,299.81 km) |
| Sumner to Elvas | 5,273.73 mi (8,487.24 km) |
