| Ponca City to Benavente | 4,611.42 mi (7,421.36 km) |
| Ponca City to Bombarral | 4,584.64 mi (7,378.26 km) |
| Ponca City to Bougado | 4,543.39 mi (7,311.88 km) |
| Ponca City to Braga | 4,542.68 mi (7,310.74 km) |
| Ponca City to Braganca | 4,609.20 mi (7,417.80 km) |
| Ponca City to Cabeceiras de Basto | 4,561.56 mi (7,341.12 km) |
| Ponca City to Cacem | 4,594.19 mi (7,393.63 km) |
| Ponca City to Cadaval | 4,588.39 mi (7,384.30 km) |
| Ponca City to Caldas da Rainha | 4,580.89 mi (7,372.23 km) |
| Ponca City to Calheta | 4,408.21 mi (7,094.32 km) |
| Ponca City to Camara de Lobos | 4,418.81 mi (7,111.38 km) |
| Ponca City to Canico | 4,427.12 mi (7,124.75 km) |
| Ponca City to Cantanhede | 4,574.65 mi (7,362.18 km) |
| Ponca City to Carregal do Sal | 4,599.07 mi (7,401.49 km) |
| Ponca City to Cartaxo | 4,606.01 mi (7,412.65 km) |
