| La Teste-de-Buch to Olympia Heights (Florida) | 4,480.22 mi (7,210.21 km) |
| La Teste-de-Buch to Omaha (Nebraska) | 4,513.51 mi (7,263.78 km) |
| La Teste-de-Buch to On Top of the World Designated Place (Florida) | 4,426.07 mi (7,123.07 km) |
| La Teste-de-Buch to Onalaska (Wisconsin) | 4,207.54 mi (6,771.37 km) |
| La Teste-de-Buch to Oneida (New York) | 3,578.46 mi (5,758.98 km) |
| La Teste-de-Buch to Oneonta (New York) | 3,573.13 mi (5,750.40 km) |
| La Teste-de-Buch to Ontario (California) | 5,700.85 mi (9,174.63 km) |
| La Teste-de-Buch to Ontario (Oregon) | 5,155.96 mi (8,297.71 km) |
| La Teste-de-Buch to Opa-locka (Florida) | 4,468.49 mi (7,191.34 km) |
| La Teste-de-Buch to Opelika (Alabama) | 4,417.89 mi (7,109.91 km) |
| La Teste-de-Buch to Opelousas (Louisiana) | 4,816.60 mi (7,751.57 km) |
| La Teste-de-Buch to Orange (California) | 5,721.25 mi (9,207.47 km) |
| La Teste-de-Buch to Orange (Texas) | 4,910.46 mi (7,902.62 km) |
| La Teste-de-Buch to Orange City (Florida) | 4,386.19 mi (7,058.89 km) |
| La Teste-de-Buch to Orangeburg (South Carolina) | 4,175.13 mi (6,719.22 km) |
