| Ponca City to Buhusi | 5,703.13 mi (9,178.29 km) |
| Ponca City to Bumbesti-Jiu | 5,671.11 mi (9,126.77 km) |
| Ponca City to Busteni | 5,731.64 mi (9,224.18 km) |
| Ponca City to Buzau | 5,786.94 mi (9,313.17 km) |
| Ponca City to Cajvana | 5,629.43 mi (9,059.69 km) |
| Ponca City to Calafat | 5,715.50 mi (9,198.21 km) |
| Ponca City to Calan | 5,630.94 mi (9,062.13 km) |
| Ponca City to Calarasi | 5,852.80 mi (9,419.18 km) |
| Ponca City to Campia Turzii | 5,619.89 mi (9,044.35 km) |
| Ponca City to Campina | 5,752.62 mi (9,257.95 km) |
| Ponca City to Campulung | 5,722.64 mi (9,209.70 km) |
| Ponca City to Campulung Moldovenesc | 5,624.95 mi (9,052.48 km) |
| Ponca City to Caracal | 5,757.11 mi (9,265.17 km) |
| Ponca City to Caransebes | 5,619.59 mi (9,043.85 km) |
| Ponca City to Carei | 5,517.39 mi (8,879.38 km) |
