| Grasse to Oswego (Illinois) | 4,547.32 mi (7,318.20 km) |
| Grasse to Oswego (New York) | 3,983.37 mi (6,410.61 km) |
| Grasse to Otsego (Minnesota) | 4,600.57 mi (7,403.90 km) |
| Grasse to Ottawa (Illinois) | 4,581.19 mi (7,372.72 km) |
| Grasse to Ottawa (Kansas) | 4,964.45 mi (7,989.51 km) |
| Grasse to Ottumwa (Iowa) | 4,740.85 mi (7,629.66 km) |
| Grasse to Overland (Missouri) | 4,760.18 mi (7,660.77 km) |
| Grasse to Overland Park (Kansas) | 4,928.04 mi (7,930.92 km) |
| Grasse to Overlea (Maryland) | 4,137.04 mi (6,657.92 km) |
| Grasse to Oviedo (Florida) | 4,793.84 mi (7,714.94 km) |
| Grasse to Owasso (Oklahoma) | 5,095.00 mi (8,199.60 km) |
| Grasse to Owatonna (Minnesota) | 4,637.18 mi (7,462.82 km) |
| Grasse to Owensboro (Kentucky) | 4,664.36 mi (7,506.56 km) |
| Grasse to Owings Mills (Maryland) | 4,147.36 mi (6,674.53 km) |
| Grasse to Owosso (Michigan) | 4,322.72 mi (6,956.75 km) |
