| Probistip to Oswego (Illinois) | 5,216.41 mi (8,394.99 km) |
| Probistip to Oswego (New York) | 4,680.71 mi (7,532.88 km) |
| Probistip to Otsego (Minnesota) | 5,227.74 mi (8,413.24 km) |
| Probistip to Ottawa (Illinois) | 5,250.33 mi (8,449.59 km) |
| Probistip to Ottawa (Kansas) | 5,623.40 mi (9,049.98 km) |
| Probistip to Ottumwa (Iowa) | 5,398.15 mi (8,687.48 km) |
| Probistip to Overland (Missouri) | 5,437.91 mi (8,751.47 km) |
| Probistip to Overland Park (Kansas) | 5,587.85 mi (8,992.77 km) |
| Probistip to Overlea (Maryland) | 4,855.62 mi (7,814.37 km) |
| Probistip to Oviedo (Florida) | 5,541.63 mi (8,918.40 km) |
| Probistip to Owasso (Oklahoma) | 5,763.53 mi (9,275.50 km) |
| Probistip to Owatonna (Minnesota) | 5,273.23 mi (8,486.45 km) |
| Probistip to Owensboro (Kentucky) | 5,358.45 mi (8,623.60 km) |
| Probistip to Owings Mills (Maryland) | 4,864.98 mi (7,829.43 km) |
| Probistip to Owosso (Michigan) | 4,998.90 mi (8,044.95 km) |
