| Groningen to Oswego (Illinois) | 4,171.22 mi (6,712.92 km) |
| Groningen to Oswego (New York) | 3,654.65 mi (5,881.59 km) |
| Groningen to Otsego (Minnesota) | 4,171.08 mi (6,712.71 km) |
| Groningen to Ottawa (Illinois) | 4,205.04 mi (6,767.37 km) |
| Groningen to Ottawa (Kansas) | 4,573.20 mi (7,359.86 km) |
| Groningen to Ottumwa (Iowa) | 4,348.00 mi (6,997.43 km) |
| Groningen to Overland (Missouri) | 4,395.86 mi (7,074.45 km) |
| Groningen to Overland Park (Kansas) | 4,538.02 mi (7,303.24 km) |
| Groningen to Overlea (Maryland) | 3,847.59 mi (6,192.09 km) |
| Groningen to Oviedo (Florida) | 4,569.02 mi (7,353.12 km) |
| Groningen to Owasso (Oklahoma) | 4,716.36 mi (7,590.24 km) |
| Groningen to Owatonna (Minnesota) | 4,217.97 mi (6,788.16 km) |
| Groningen to Owensboro (Kentucky) | 4,326.16 mi (6,962.28 km) |
| Groningen to Owings Mills (Maryland) | 3,855.84 mi (6,205.37 km) |
| Groningen to Owosso (Michigan) | 3,957.85 mi (6,369.55 km) |
