| Totteridge to Oswego (Illinois) | 3,976.66 mi (6,399.82 km) |
| Totteridge to Oswego (New York) | 3,438.29 mi (5,533.39 km) |
| Totteridge to Otsego (Minnesota) | 4,002.67 mi (6,441.68 km) |
| Totteridge to Ottawa (Illinois) | 4,010.61 mi (6,454.46 km) |
| Totteridge to Ottawa (Kansas) | 4,386.74 mi (7,059.77 km) |
| Totteridge to Ottumwa (Iowa) | 4,161.70 mi (6,697.60 km) |
| Totteridge to Overland (Missouri) | 4,196.72 mi (6,753.98 km) |
| Totteridge to Overland Park (Kansas) | 4,350.89 mi (7,002.08 km) |
| Totteridge to Overlea (Maryland) | 3,617.20 mi (5,821.31 km) |
| Totteridge to Oviedo (Florida) | 4,320.12 mi (6,952.57 km) |
| Totteridge to Owasso (Oklahoma) | 4,524.45 mi (7,281.40 km) |
| Totteridge to Owatonna (Minnesota) | 4,044.32 mi (6,508.70 km) |
| Totteridge to Owensboro (Kentucky) | 4,115.84 mi (6,623.80 km) |
| Totteridge to Owings Mills (Maryland) | 3,626.21 mi (5,835.82 km) |
| Totteridge to Owosso (Michigan) | 3,757.64 mi (6,047.34 km) |
