| Groslay to Oswego (Illinois) | 4,164.04 mi (6,701.37 km) |
| Groslay to Oswego (New York) | 3,615.68 mi (5,818.88 km) |
| Groslay to Otsego (Minnesota) | 4,200.10 mi (6,759.41 km) |
| Groslay to Ottawa (Illinois) | 4,197.99 mi (6,756.01 km) |
| Groslay to Ottawa (Kansas) | 4,576.99 mi (7,365.96 km) |
| Groslay to Ottumwa (Iowa) | 4,352.32 mi (7,004.38 km) |
| Groslay to Overland (Missouri) | 4,381.66 mi (7,051.60 km) |
| Groslay to Overland Park (Kansas) | 4,540.92 mi (7,307.90 km) |
| Groslay to Overlea (Maryland) | 3,785.58 mi (6,092.30 km) |
| Groslay to Oviedo (Florida) | 4,473.03 mi (7,198.65 km) |
| Groslay to Owasso (Oklahoma) | 4,712.21 mi (7,583.57 km) |
| Groslay to Owatonna (Minnesota) | 4,239.91 mi (6,823.47 km) |
| Groslay to Owensboro (Kentucky) | 4,295.28 mi (6,912.58 km) |
| Groslay to Owings Mills (Maryland) | 3,795.08 mi (6,107.60 km) |
| Groslay to Owosso (Michigan) | 3,942.77 mi (6,345.28 km) |
