| Royston to Cascais | 1,026.82 mi (1,652.51 km) |
| Royston to Castelo Branco | 917.13 mi (1,475.98 km) |
| Royston to Castro Daire | 856.10 mi (1,377.77 km) |
| Royston to Celorico de Basto | 826.94 mi (1,330.84 km) |
| Royston to Chamusca | 966.14 mi (1,554.85 km) |
| Royston to Chaves | 793.28 mi (1,276.67 km) |
| Royston to Cinfaes | 847.64 mi (1,364.14 km) |
| Royston to Coimbra | 910.11 mi (1,464.68 km) |
| Royston to Condeixa-a-Nova | 917.58 mi (1,476.70 km) |
| Royston to Corroios | 1,026.72 mi (1,652.35 km) |
| Royston to Coruche | 992.23 mi (1,596.84 km) |
| Royston to Costa de Caparica | 1,026.56 mi (1,652.09 km) |
| Royston to Covilha | 886.98 mi (1,427.46 km) |
| Royston to Eiras | 908.04 mi (1,461.34 km) |
| Royston to Elvas | 972.88 mi (1,565.70 km) |
