| Morris to Oswego (Illinois) | 21.85 mi (35.17 km) |
| Morris to Oswego (New York) | 624.65 mi (1,005.27 km) |
| Morris to Otsego (Minnesota) | 374.45 mi (602.63 km) |
| Morris to Ottawa (Illinois) | 20.56 mi (33.09 km) |
| Morris to Ottawa (Kansas) | 409.24 mi (658.62 km) |
| Morris to Ottumwa (Iowa) | 208.77 mi (335.99 km) |
| Morris to Overland (Missouri) | 211.55 mi (340.46 km) |
| Morris to Overland Park (Kansas) | 372.41 mi (599.34 km) |
| Morris to Overlea (Maryland) | 641.75 mi (1,032.79 km) |
| Morris to Oviedo (Florida) | 968.63 mi (1,558.85 km) |
| Morris to Owasso (Oklahoma) | 530.86 mi (854.34 km) |
| Morris to Owatonna (Minnesota) | 307.46 mi (494.80 km) |
| Morris to Owensboro (Kentucky) | 259.53 mi (417.67 km) |
| Morris to Owings Mills (Maryland) | 626.80 mi (1,008.73 km) |
| Morris to Owosso (Michigan) | 244.86 mi (394.07 km) |
