| Backi Petrovac to Olympia Heights (Florida) | 5,422.60 mi (8,726.83 km) |
| Backi Petrovac to Omaha (Nebraska) | 5,256.14 mi (8,458.93 km) |
| Backi Petrovac to On Top of the World Designated Place (Florida) | 5,341.31 mi (8,596.01 km) |
| Backi Petrovac to Onalaska (Wisconsin) | 4,956.19 mi (7,976.22 km) |
| Backi Petrovac to Oneida (New York) | 4,419.32 mi (7,112.21 km) |
| Backi Petrovac to Oneonta (New York) | 4,422.73 mi (7,117.70 km) |
| Backi Petrovac to Ontario (California) | 6,332.84 mi (10,191.72 km) |
| Backi Petrovac to Ontario (Oregon) | 5,711.77 mi (9,192.20 km) |
| Backi Petrovac to Opa-locka (Florida) | 5,410.33 mi (8,707.08 km) |
| Backi Petrovac to Opelika (Alabama) | 5,294.73 mi (8,521.05 km) |
| Backi Petrovac to Opelousas (Louisiana) | 5,670.84 mi (9,126.34 km) |
| Backi Petrovac to Orange (California) | 6,353.03 mi (10,224.22 km) |
| Backi Petrovac to Orange (Texas) | 5,757.41 mi (9,265.65 km) |
| Backi Petrovac to Orange City (Florida) | 5,307.03 mi (8,540.85 km) |
| Backi Petrovac to Orangeburg (South Carolina) | 5,069.00 mi (8,157.76 km) |
