| Barsbuttel to Olympia Heights (Florida) | 4,826.15 mi (7,766.94 km) |
| Barsbuttel to Omaha (Nebraska) | 4,563.71 mi (7,344.59 km) |
| Barsbuttel to On Top of the World Designated Place (Florida) | 4,721.66 mi (7,598.77 km) |
| Barsbuttel to Onalaska (Wisconsin) | 4,266.39 mi (6,866.09 km) |
| Barsbuttel to Oneida (New York) | 3,763.93 mi (6,057.47 km) |
| Barsbuttel to Oneonta (New York) | 3,771.47 mi (6,069.60 km) |
| Barsbuttel to Ontario (California) | 5,626.70 mi (9,055.29 km) |
| Barsbuttel to Ontario (Oregon) | 5,006.75 mi (8,057.58 km) |
| Barsbuttel to Opa-locka (Florida) | 4,813.46 mi (7,746.51 km) |
| Barsbuttel to Opelika (Alabama) | 4,650.04 mi (7,483.52 km) |
| Barsbuttel to Opelousas (Louisiana) | 5,011.72 mi (8,065.59 km) |
| Barsbuttel to Orange (California) | 5,646.88 mi (9,087.77 km) |
| Barsbuttel to Orange (Texas) | 5,094.41 mi (8,198.66 km) |
| Barsbuttel to Orange City (Florida) | 4,692.15 mi (7,551.29 km) |
| Barsbuttel to Orangeburg (South Carolina) | 4,436.63 mi (7,140.07 km) |
