| Mazzarino to Olympia Heights (Florida) | 5,395.76 mi (8,683.63 km) |
| Mazzarino to Omaha (Nebraska) | 5,450.88 mi (8,772.34 km) |
| Mazzarino to On Top of the World Designated Place (Florida) | 5,355.50 mi (8,618.85 km) |
| Mazzarino to Onalaska (Wisconsin) | 5,145.18 mi (8,280.37 km) |
| Mazzarino to Oneida (New York) | 4,523.08 mi (7,279.19 km) |
| Mazzarino to Oneonta (New York) | 4,517.48 mi (7,270.18 km) |
| Mazzarino to Ontario (California) | 6,615.75 mi (10,647.03 km) |
| Mazzarino to Ontario (Oregon) | 6,041.84 mi (9,723.40 km) |
| Mazzarino to Opa-locka (Florida) | 5,384.43 mi (8,665.40 km) |
| Mazzarino to Opelika (Alabama) | 5,358.07 mi (8,622.98 km) |
| Mazzarino to Opelousas (Louisiana) | 5,759.41 mi (9,268.87 km) |
| Mazzarino to Orange (California) | 6,636.18 mi (10,679.90 km) |
| Mazzarino to Orange (Texas) | 5,853.89 mi (9,420.92 km) |
| Mazzarino to Orange City (Florida) | 5,313.47 mi (8,551.20 km) |
| Mazzarino to Orangeburg (South Carolina) | 5,112.19 mi (8,227.27 km) |
