| New Philadelphia to Oswego (Illinois) | 368.48 mi (593.01 km) |
| New Philadelphia to Oswego (New York) | 326.05 mi (524.73 km) |
| New Philadelphia to Otsego (Minnesota) | 698.54 mi (1,124.19 km) |
| New Philadelphia to Ottawa (Illinois) | 390.14 mi (627.86 km) |
| New Philadelphia to Ottawa (Kansas) | 747.16 mi (1,202.44 km) |
| New Philadelphia to Ottumwa (Iowa) | 575.42 mi (926.05 km) |
| New Philadelphia to Overland (Missouri) | 490.97 mi (790.14 km) |
| New Philadelphia to Overland Park (Kansas) | 712.26 mi (1,146.27 km) |
| New Philadelphia to Overlea (Maryland) | 272.06 mi (437.84 km) |
| New Philadelphia to Oviedo (Florida) | 817.36 mi (1,315.42 km) |
| New Philadelphia to Owasso (Oklahoma) | 830.40 mi (1,336.40 km) |
| New Philadelphia to Owatonna (Minnesota) | 651.36 mi (1,048.26 km) |
| New Philadelphia to Owensboro (Kentucky) | 357.86 mi (575.92 km) |
| New Philadelphia to Owings Mills (Maryland) | 257.15 mi (413.84 km) |
| New Philadelphia to Owosso (Michigan) | 223.49 mi (359.67 km) |
