| Richmond Hill to Oskaloosa (Iowa) | 901.70 mi (1,451.15 km) |
| Richmond Hill to Oswego (Illinois) | 779.00 mi (1,253.68 km) |
| Richmond Hill to Oswego (New York) | 839.92 mi (1,351.72 km) |
| Richmond Hill to Otsego (Minnesota) | 1,134.93 mi (1,826.49 km) |
| Richmond Hill to Ottawa (Illinois) | 774.04 mi (1,245.70 km) |
| Richmond Hill to Ottawa (Kansas) | 911.62 mi (1,467.12 km) |
| Richmond Hill to Ottumwa (Iowa) | 880.49 mi (1,417.01 km) |
| Richmond Hill to Overland (Missouri) | 693.04 mi (1,115.34 km) |
| Richmond Hill to Overland Park (Kansas) | 893.20 mi (1,437.46 km) |
| Richmond Hill to Overlea (Maryland) | 581.48 mi (935.80 km) |
| Richmond Hill to Oviedo (Florida) | 224.21 mi (360.83 km) |
| Richmond Hill to Owasso (Oklahoma) | 883.16 mi (1,421.31 km) |
| Richmond Hill to Owatonna (Minnesota) | 1,060.87 mi (1,707.31 km) |
| Richmond Hill to Owensboro (Kentucky) | 521.39 mi (839.10 km) |
| Richmond Hill to Owings Mills (Maryland) | 577.45 mi (929.32 km) |
