| Montignoso to Oswego (Illinois) | 4,663.83 mi (7,505.71 km) |
| Montignoso to Oswego (New York) | 4,107.83 mi (6,610.91 km) |
| Montignoso to Otsego (Minnesota) | 4,705.19 mi (7,572.27 km) |
| Montignoso to Ottawa (Illinois) | 4,697.76 mi (7,560.32 km) |
| Montignoso to Ottawa (Kansas) | 5,078.53 mi (8,173.10 km) |
| Montignoso to Ottumwa (Iowa) | 4,854.17 mi (7,812.04 km) |
| Montignoso to Overland (Missouri) | 4,879.49 mi (7,852.77 km) |
| Montignoso to Overland Park (Kansas) | 5,042.32 mi (8,114.83 km) |
| Montignoso to Overlea (Maryland) | 4,268.50 mi (6,869.49 km) |
| Montignoso to Oviedo (Florida) | 4,935.87 mi (7,943.51 km) |
| Montignoso to Owasso (Oklahoma) | 5,211.98 mi (8,387.87 km) |
| Montignoso to Owatonna (Minnesota) | 4,744.34 mi (7,635.27 km) |
| Montignoso to Owensboro (Kentucky) | 4,788.49 mi (7,706.34 km) |
| Montignoso to Owings Mills (Maryland) | 4,278.51 mi (6,885.60 km) |
| Montignoso to Owosso (Michigan) | 4,441.07 mi (7,147.21 km) |
