| Bronx to Olympia Heights (Florida) | 1,109.10 mi (1,784.92 km) |
| Bronx to Omaha (Nebraska) | 1,153.15 mi (1,855.81 km) |
| Bronx to On Top of the World Designated Place (Florida) | 940.00 mi (1,512.78 km) |
| Bronx to Onalaska (Wisconsin) | 907.92 mi (1,461.16 km) |
| Bronx to Oneida (New York) | 179.39 mi (288.71 km) |
| Bronx to Oneonta (New York) | 127.03 mi (204.44 km) |
| Bronx to Ontario (California) | 2,419.37 mi (3,893.61 km) |
| Bronx to Ontario (Oregon) | 2,184.01 mi (3,514.83 km) |
| Bronx to Opa-locka (Florida) | 1,095.95 mi (1,763.76 km) |
| Bronx to Opelika (Alabama) | 850.77 mi (1,369.18 km) |
| Bronx to Opelousas (Louisiana) | 1,242.42 mi (1,999.48 km) |
| Bronx to Orange (California) | 2,437.35 mi (3,922.54 km) |
| Bronx to Orange (Texas) | 1,337.37 mi (2,152.29 km) |
| Bronx to Orange City (Florida) | 923.60 mi (1,486.39 km) |
| Bronx to Orangeburg (South Carolina) | 637.45 mi (1,025.88 km) |
