| Ponca City to Sestu | 5,396.60 mi (8,684.99 km) |
| Ponca City to Settimo Torinese | 5,098.92 mi (8,205.92 km) |
| Ponca City to Seveso | 5,131.36 mi (8,258.13 km) |
| Ponca City to Sezze | 5,463.35 mi (8,792.41 km) |
| Ponca City to Siano | 5,559.04 mi (8,946.41 km) |
| Ponca City to Siena | 5,315.26 mi (8,554.09 km) |
| Ponca City to Signa | 5,286.17 mi (8,507.28 km) |
| Ponca City to Silea | 5,251.37 mi (8,451.26 km) |
| Ponca City to Silvi Paese | 5,457.70 mi (8,783.32 km) |
| Ponca City to Sinalunga | 5,335.42 mi (8,586.53 km) |
| Ponca City to Siniscola | 5,367.34 mi (8,637.90 km) |
| Ponca City to Sinnai | 5,401.15 mi (8,692.31 km) |
| Ponca City to Siracusa | 5,753.43 mi (9,259.25 km) |
| Ponca City to Solaro | 5,130.47 mi (8,256.69 km) |
| Ponca City to Soliera | 5,238.47 mi (8,430.50 km) |
