| Callaway to Oswego (Illinois) | 812.82 mi (1,308.11 km) |
| Callaway to Oswego (New York) | 1,046.15 mi (1,683.62 km) |
| Callaway to Otsego (Minnesota) | 1,133.14 mi (1,823.61 km) |
| Callaway to Ottawa (Illinois) | 796.48 mi (1,281.80 km) |
| Callaway to Ottawa (Kansas) | 804.33 mi (1,294.45 km) |
| Callaway to Ottumwa (Iowa) | 844.44 mi (1,358.99 km) |
| Callaway to Overland (Missouri) | 651.78 mi (1,048.94 km) |
| Callaway to Overland Park (Kansas) | 796.51 mi (1,281.86 km) |
| Callaway to Overlea (Maryland) | 817.56 mi (1,315.74 km) |
| Callaway to Oviedo (Florida) | 282.11 mi (454.01 km) |
| Callaway to Owasso (Oklahoma) | 729.67 mi (1,174.30 km) |
| Callaway to Owatonna (Minnesota) | 1,051.73 mi (1,692.60 km) |
| Callaway to Owensboro (Kentucky) | 534.18 mi (859.69 km) |
| Callaway to Owings Mills (Maryland) | 810.45 mi (1,304.29 km) |
| Callaway to Owosso (Michigan) | 891.84 mi (1,435.28 km) |
