| River Ridge to Oskaloosa (Iowa) | 794.64 mi (1,278.85 km) |
| River Ridge to Oswego (Illinois) | 816.84 mi (1,314.57 km) |
| River Ridge to Oswego (New York) | 1,199.37 mi (1,930.20 km) |
| River Ridge to Otsego (Minnesota) | 1,073.57 mi (1,727.74 km) |
| River Ridge to Ottawa (Illinois) | 791.25 mi (1,273.39 km) |
| River Ridge to Ottawa (Kansas) | 662.50 mi (1,066.19 km) |
| River Ridge to Ottumwa (Iowa) | 774.05 mi (1,245.71 km) |
| River Ridge to Overland (Missouri) | 603.75 mi (971.64 km) |
| River Ridge to Overland Park (Kansas) | 667.07 mi (1,073.54 km) |
| River Ridge to Overlea (Maryland) | 1,012.14 mi (1,628.89 km) |
| River Ridge to Oviedo (Florida) | 551.45 mi (887.47 km) |
| River Ridge to Owasso (Oklahoma) | 544.37 mi (876.08 km) |
| River Ridge to Owatonna (Minnesota) | 990.25 mi (1,593.66 km) |
| River Ridge to Owensboro (Kentucky) | 567.35 mi (913.07 km) |
| River Ridge to Owings Mills (Maryland) | 1,002.26 mi (1,612.99 km) |
