| Diamond Bar to Cascais | 5,640.74 mi (9,077.89 km) |
| Diamond Bar to Castelo Branco | 5,674.45 mi (9,132.15 km) |
| Diamond Bar to Castro Daire | 5,610.31 mi (9,028.93 km) |
| Diamond Bar to Celorico de Basto | 5,587.08 mi (8,991.53 km) |
| Diamond Bar to Chamusca | 5,653.08 mi (9,097.76 km) |
| Diamond Bar to Chaves | 5,593.44 mi (9,001.78 km) |
| Diamond Bar to Cinfaes | 5,593.60 mi (9,002.03 km) |
| Diamond Bar to Coimbra | 5,618.93 mi (9,042.80 km) |
| Diamond Bar to Condeixa-a-Nova | 5,619.96 mi (9,044.45 km) |
| Diamond Bar to Corroios | 5,655.72 mi (9,102.00 km) |
| Diamond Bar to Coruche | 5,667.88 mi (9,121.57 km) |
| Diamond Bar to Costa de Caparica | 5,650.83 mi (9,094.13 km) |
| Diamond Bar to Covilha | 5,654.49 mi (9,100.02 km) |
| Diamond Bar to Eiras | 5,617.84 mi (9,041.04 km) |
| Diamond Bar to Elvas | 5,729.91 mi (9,221.40 km) |
