| Erba to Oswego (Illinois) | 4,552.66 mi (7,326.80 km) |
| Erba to Oswego (New York) | 4,002.49 mi (6,441.38 km) |
| Erba to Otsego (Minnesota) | 4,587.40 mi (7,382.70 km) |
| Erba to Ottawa (Illinois) | 4,586.62 mi (7,381.44 km) |
| Erba to Ottawa (Kansas) | 4,965.67 mi (7,991.47 km) |
| Erba to Ottumwa (Iowa) | 4,740.98 mi (7,629.86 km) |
| Erba to Overland (Missouri) | 4,770.03 mi (7,676.61 km) |
| Erba to Overland Park (Kansas) | 4,929.60 mi (7,933.42 km) |
| Erba to Overlea (Maryland) | 4,168.83 mi (6,709.09 km) |
| Erba to Oviedo (Florida) | 4,846.71 mi (7,800.03 km) |
| Erba to Owasso (Oklahoma) | 5,100.84 mi (8,209.02 km) |
| Erba to Owatonna (Minnesota) | 4,627.80 mi (7,447.72 km) |
| Erba to Owensboro (Kentucky) | 4,682.50 mi (7,535.76 km) |
| Erba to Owings Mills (Maryland) | 4,178.56 mi (6,724.74 km) |
| Erba to Owosso (Michigan) | 4,331.20 mi (6,970.40 km) |
