| Olney to Benavente | 3,569.80 mi (5,745.04 km) |
| Olney to Bombarral | 3,544.11 mi (5,703.69 km) |
| Olney to Bougado | 3,518.95 mi (5,663.20 km) |
| Olney to Braga | 3,520.22 mi (5,665.24 km) |
| Olney to Braganca | 3,593.21 mi (5,782.72 km) |
| Olney to Cabeceiras de Basto | 3,540.04 mi (5,697.14 km) |
| Olney to Cacem | 3,550.05 mi (5,713.26 km) |
| Olney to Cadaval | 3,547.77 mi (5,709.58 km) |
| Olney to Caldas da Rainha | 3,541.33 mi (5,699.22 km) |
| Olney to Calheta | 3,320.15 mi (5,343.26 km) |
| Olney to Camara de Lobos | 3,330.90 mi (5,360.57 km) |
| Olney to Canico | 3,339.22 mi (5,373.95 km) |
| Olney to Cantanhede | 3,542.90 mi (5,701.75 km) |
| Olney to Carregal do Sal | 3,569.49 mi (5,744.55 km) |
| Olney to Cartaxo | 3,565.63 mi (5,738.32 km) |
