| Ponca City to Nyon | 4,988.55 mi (8,028.29 km) |
| Ponca City to Oberriet | 5,078.38 mi (8,172.87 km) |
| Ponca City to Obersiggenthal | 5,023.41 mi (8,084.40 km) |
| Ponca City to Oberwil | 4,994.39 mi (8,037.69 km) |
| Ponca City to Oberwingert | 5,040.17 mi (8,111.37 km) |
| Ponca City to Oftringen | 5,016.07 mi (8,072.59 km) |
| Ponca City to Olten | 5,014.09 mi (8,069.40 km) |
| Ponca City to Onex | 4,991.25 mi (8,032.65 km) |
| Ponca City to Opfikon | 5,035.96 mi (8,104.60 km) |
| Ponca City to Ostermundigen | 5,014.33 mi (8,069.79 km) |
| Ponca City to Payerne | 4,998.48 mi (8,044.28 km) |
| Ponca City to Pfaffikon | 5,046.85 mi (8,122.13 km) |
| Ponca City to Plan-les-Ouates | 4,992.57 mi (8,034.76 km) |
| Ponca City to Pratteln | 4,999.78 mi (8,046.37 km) |
| Ponca City to Prilly | 4,996.87 mi (8,041.69 km) |
