| Ponca City to Devnya | 5,911.40 mi (9,513.48 km) |
| Ponca City to Dimitrovgrad | 5,904.39 mi (9,502.20 km) |
| Ponca City to Dobrich | 5,902.08 mi (9,498.49 km) |
| Ponca City to Dospat | 5,874.25 mi (9,453.69 km) |
| Ponca City to Dupnitsa | 5,806.30 mi (9,344.34 km) |
| Ponca City to Elhovo | 5,931.77 mi (9,546.27 km) |
| Ponca City to Etropole | 5,809.12 mi (9,348.88 km) |
| Ponca City to Gabrovo | 5,853.70 mi (9,420.63 km) |
| Ponca City to Gorna Oryahovitsa | 5,852.74 mi (9,419.07 km) |
| Ponca City to Gotse Delchev | 5,862.98 mi (9,435.55 km) |
| Ponca City to Harmanli | 5,920.74 mi (9,528.52 km) |
| Ponca City to Haskovo | 5,909.17 mi (9,509.89 km) |
| Ponca City to Ihtiman | 5,822.46 mi (9,370.34 km) |
| Ponca City to Isperih | 5,861.14 mi (9,432.60 km) |
| Ponca City to Kardzhali | 5,916.58 mi (9,521.81 km) |
