| North Druid Hills to Oswego (Illinois) | 585.76 mi (942.69 km) |
| North Druid Hills to Oswego (New York) | 787.41 mi (1,267.22 km) |
| North Druid Hills to Otsego (Minnesota) | 931.74 mi (1,499.50 km) |
| North Druid Hills to Ottawa (Illinois) | 575.89 mi (926.81 km) |
| North Druid Hills to Ottawa (Kansas) | 692.83 mi (1,115.01 km) |
| North Druid Hills to Ottumwa (Iowa) | 666.29 mi (1,072.29 km) |
| North Druid Hills to Overland (Missouri) | 476.19 mi (766.35 km) |
| North Druid Hills to Overland Park (Kansas) | 673.95 mi (1,084.61 km) |
| North Druid Hills to Overlea (Maryland) | 577.88 mi (930.01 km) |
| North Druid Hills to Oviedo (Florida) | 401.81 mi (646.65 km) |
| North Druid Hills to Owasso (Oklahoma) | 672.30 mi (1,081.96 km) |
| North Druid Hills to Owatonna (Minnesota) | 854.84 mi (1,375.73 km) |
| North Druid Hills to Owensboro (Kentucky) | 313.89 mi (505.16 km) |
| North Druid Hills to Owings Mills (Maryland) | 568.73 mi (915.29 km) |
| North Druid Hills to Owosso (Michigan) | 634.12 mi (1,020.52 km) |
