| New Philadelphia to Olympia Heights (Florida) | 1,021.92 mi (1,644.62 km) |
| New Philadelphia to Omaha (Nebraska) | 764.42 mi (1,230.21 km) |
| New Philadelphia to On Top of the World Designated Place (Florida) | 787.75 mi (1,267.76 km) |
| New Philadelphia to Onalaska (Wisconsin) | 552.06 mi (888.46 km) |
| New Philadelphia to Oneida (New York) | 347.25 mi (558.84 km) |
| New Philadelphia to Oneonta (New York) | 356.79 mi (574.20 km) |
| New Philadelphia to Ontario (California) | 2,023.11 mi (3,255.88 km) |
| New Philadelphia to Ontario (Oregon) | 1,819.36 mi (2,927.98 km) |
| New Philadelphia to Opa-locka (Florida) | 1,010.11 mi (1,625.62 km) |
| New Philadelphia to Opelika (Alabama) | 582.93 mi (938.14 km) |
| New Philadelphia to Opelousas (Louisiana) | 910.64 mi (1,465.54 km) |
| New Philadelphia to Orange (California) | 2,040.94 mi (3,284.57 km) |
| New Philadelphia to Orange (Texas) | 995.70 mi (1,602.43 km) |
| New Philadelphia to Orange City (Florida) | 798.16 mi (1,284.51 km) |
| New Philadelphia to Orangeburg (South Carolina) | 484.21 mi (779.27 km) |
