| Knjazevac to Olympia Heights (Florida) | 5,605.10 mi (9,020.54 km) |
| Knjazevac to Omaha (Nebraska) | 5,445.83 mi (8,764.21 km) |
| Knjazevac to On Top of the World Designated Place (Florida) | 5,526.88 mi (8,894.65 km) |
| Knjazevac to Onalaska (Wisconsin) | 5,146.08 mi (8,281.81 km) |
| Knjazevac to Oneida (New York) | 4,608.64 mi (7,416.89 km) |
| Knjazevac to Oneonta (New York) | 4,611.77 mi (7,421.92 km) |
| Knjazevac to Ontario (California) | 6,517.21 mi (10,488.44 km) |
| Knjazevac to Ontario (Oregon) | 5,892.09 mi (9,482.41 km) |
| Knjazevac to Opa-locka (Florida) | 5,592.90 mi (9,000.91 km) |
| Knjazevac to Opelika (Alabama) | 5,482.99 mi (8,824.02 km) |
| Knjazevac to Opelousas (Louisiana) | 5,860.19 mi (9,431.06 km) |
| Knjazevac to Orange (California) | 6,537.37 mi (10,520.87 km) |
| Knjazevac to Orange (Texas) | 5,947.00 mi (9,570.76 km) |
| Knjazevac to Orange City (Florida) | 5,492.04 mi (8,838.58 km) |
| Knjazevac to Orangeburg (South Carolina) | 5,256.12 mi (8,458.91 km) |
