| Petersburg to Olivares | 3,813.40 mi (6,137.07 km) |
| Petersburg to Olivenza | 3,731.85 mi (6,005.84 km) |
| Petersburg to Olot | 4,101.00 mi (6,599.92 km) |
| Petersburg to Onate | 3,848.31 mi (6,193.25 km) |
| Petersburg to Onda | 4,033.27 mi (6,490.92 km) |
| Petersburg to Onteniente | 4,049.23 mi (6,516.60 km) |
| Petersburg to Orihuela | 4,053.94 mi (6,524.18 km) |
| Petersburg to Osuna | 3,871.35 mi (6,230.33 km) |
| Petersburg to Ourense | 3,605.47 mi (5,802.44 km) |
| Petersburg to Oviedo | 3,678.60 mi (5,920.13 km) |
| Petersburg to Paiporta | 4,041.02 mi (6,503.40 km) |
| Petersburg to Pajara | 3,660.16 mi (5,890.46 km) |
| Petersburg to Palafolls | 4,127.94 mi (6,643.27 km) |
| Petersburg to Palafrugell | 4,140.06 mi (6,662.78 km) |
| Petersburg to Palamos | 4,140.53 mi (6,663.55 km) |
