| Watertown Town to Cascais | 3,180.94 mi (5,119.23 km) |
| Watertown Town to Castelo Branco | 3,241.07 mi (5,216.00 km) |
| Watertown Town to Castro Daire | 3,189.38 mi (5,132.82 km) |
| Watertown Town to Celorico de Basto | 3,172.82 mi (5,106.17 km) |
| Watertown Town to Chamusca | 3,207.22 mi (5,161.52 km) |
| Watertown Town to Chaves | 3,188.14 mi (5,130.81 km) |
| Watertown Town to Cinfaes | 3,174.28 mi (5,108.50 km) |
| Watertown Town to Coimbra | 3,185.02 mi (5,125.79 km) |
| Watertown Town to Condeixa-a-Nova | 3,184.30 mi (5,124.63 km) |
| Watertown Town to Corroios | 3,196.43 mi (5,144.16 km) |
| Watertown Town to Coruche | 3,216.65 mi (5,176.70 km) |
| Watertown Town to Costa de Caparica | 3,191.41 mi (5,136.08 km) |
| Watertown Town to Covilha | 3,227.58 mi (5,194.29 km) |
| Watertown Town to Eiras | 3,184.39 mi (5,124.78 km) |
| Watertown Town to Elvas | 3,286.11 mi (5,288.49 km) |
