| Obidos to Olympia Heights (Florida) | 4,145.83 mi (6,672.06 km) |
| Obidos to Omaha (Nebraska) | 4,371.83 mi (7,035.78 km) |
| Obidos to On Top of the World Designated Place (Florida) | 4,124.84 mi (6,638.28 km) |
| Obidos to Onalaska (Wisconsin) | 4,068.77 mi (6,548.05 km) |
| Obidos to Oneida (New York) | 3,373.88 mi (5,429.74 km) |
| Obidos to Oneonta (New York) | 3,359.95 mi (5,407.32 km) |
| Obidos to Ontario (California) | 5,613.42 mi (9,033.93 km) |
| Obidos to Ontario (Oregon) | 5,133.57 mi (8,261.69 km) |
| Obidos to Opa-locka (Florida) | 4,134.94 mi (6,654.55 km) |
| Obidos to Opelika (Alabama) | 4,157.93 mi (6,691.54 km) |
| Obidos to Opelousas (Louisiana) | 4,571.35 mi (7,356.88 km) |
| Obidos to Orange (California) | 5,633.50 mi (9,066.24 km) |
| Obidos to Orange (Texas) | 4,670.32 mi (7,516.15 km) |
| Obidos to Orange City (Florida) | 4,079.18 mi (6,564.80 km) |
| Obidos to Orangeburg (South Carolina) | 3,901.96 mi (6,279.59 km) |
