| Calheta to Oswego (Illinois) | 3,854.41 mi (6,203.08 km) |
| Calheta to Oswego (New York) | 3,240.40 mi (5,214.91 km) |
| Calheta to Otsego (Minnesota) | 4,040.89 mi (6,503.19 km) |
| Calheta to Ottawa (Illinois) | 3,884.94 mi (6,252.21 km) |
| Calheta to Ottawa (Kansas) | 4,268.50 mi (6,869.49 km) |
| Calheta to Ottumwa (Iowa) | 4,070.26 mi (6,550.45 km) |
| Calheta to Overland (Missouri) | 4,017.61 mi (6,465.72 km) |
| Calheta to Overland Park (Kansas) | 4,232.42 mi (6,811.42 km) |
| Calheta to Overlea (Maryland) | 3,288.09 mi (5,291.66 km) |
| Calheta to Oviedo (Florida) | 3,756.19 mi (6,045.01 km) |
| Calheta to Owasso (Oklahoma) | 4,356.23 mi (7,010.67 km) |
| Calheta to Owatonna (Minnesota) | 4,045.80 mi (6,511.09 km) |
| Calheta to Owensboro (Kentucky) | 3,869.93 mi (6,228.05 km) |
| Calheta to Owings Mills (Maryland) | 3,301.77 mi (5,313.68 km) |
| Calheta to Owosso (Michigan) | 3,626.26 mi (5,835.90 km) |
