| Friern Barnet to Oswego (Illinois) | 3,978.98 mi (6,403.55 km) |
| Friern Barnet to Oswego (New York) | 3,440.54 mi (5,537.01 km) |
| Friern Barnet to Otsego (Minnesota) | 4,005.03 mi (6,445.48 km) |
| Friern Barnet to Ottawa (Illinois) | 4,012.93 mi (6,458.18 km) |
| Friern Barnet to Ottawa (Kansas) | 4,389.07 mi (7,063.52 km) |
| Friern Barnet to Ottumwa (Iowa) | 4,164.03 mi (6,701.36 km) |
| Friern Barnet to Overland (Missouri) | 4,199.02 mi (6,757.68 km) |
| Friern Barnet to Overland Park (Kansas) | 4,353.22 mi (7,005.83 km) |
| Friern Barnet to Overlea (Maryland) | 3,619.39 mi (5,824.84 km) |
| Friern Barnet to Oviedo (Florida) | 4,322.20 mi (6,955.91 km) |
| Friern Barnet to Owasso (Oklahoma) | 4,526.77 mi (7,285.13 km) |
| Friern Barnet to Owatonna (Minnesota) | 4,046.67 mi (6,512.49 km) |
| Friern Barnet to Owensboro (Kentucky) | 4,118.11 mi (6,627.45 km) |
| Friern Barnet to Owings Mills (Maryland) | 3,628.40 mi (5,839.35 km) |
| Friern Barnet to Owosso (Michigan) | 3,759.94 mi (6,051.05 km) |
