| Ostrow Mazowiecka to Castelo Branco | 1,647.67 mi (2,651.66 km) |
| Ostrow Mazowiecka to Castro Daire | 1,614.86 mi (2,598.87 km) |
| Ostrow Mazowiecka to Celorico de Basto | 1,595.93 mi (2,568.41 km) |
| Ostrow Mazowiecka to Chamusca | 1,707.98 mi (2,748.72 km) |
| Ostrow Mazowiecka to Chaves | 1,559.14 mi (2,509.20 km) |
| Ostrow Mazowiecka to Cinfaes | 1,613.83 mi (2,597.20 km) |
| Ostrow Mazowiecka to Coimbra | 1,665.79 mi (2,680.83 km) |
| Ostrow Mazowiecka to Condeixa-a-Nova | 1,672.92 mi (2,692.31 km) |
| Ostrow Mazowiecka to Corroios | 1,768.93 mi (2,846.82 km) |
| Ostrow Mazowiecka to Coruche | 1,728.31 mi (2,781.44 km) |
| Ostrow Mazowiecka to Costa de Caparica | 1,770.81 mi (2,849.84 km) |
| Ostrow Mazowiecka to Covilha | 1,625.94 mi (2,616.69 km) |
| Ostrow Mazowiecka to Eiras | 1,664.16 mi (2,678.21 km) |
| Ostrow Mazowiecka to Elvas | 1,679.43 mi (2,702.78 km) |
| Ostrow Mazowiecka to Entroncamento | 1,701.96 mi (2,739.03 km) |
