| Saint-Herblain to Olympia Heights (Florida) | 4,421.16 mi (7,115.17 km) |
| Saint-Herblain to Omaha (Nebraska) | 4,393.62 mi (7,070.85 km) |
| Saint-Herblain to On Top of the World Designated Place (Florida) | 4,354.91 mi (7,008.56 km) |
| Saint-Herblain to Onalaska (Wisconsin) | 4,088.03 mi (6,579.05 km) |
| Saint-Herblain to Oneida (New York) | 3,479.95 mi (5,600.44 km) |
| Saint-Herblain to Oneonta (New York) | 3,477.21 mi (5,596.03 km) |
| Saint-Herblain to Ontario (California) | 5,564.52 mi (8,955.24 km) |
| Saint-Herblain to Ontario (Oregon) | 5,007.64 mi (8,059.02 km) |
| Saint-Herblain to Opa-locka (Florida) | 4,409.16 mi (7,095.86 km) |
| Saint-Herblain to Opelika (Alabama) | 4,332.66 mi (6,972.75 km) |
| Saint-Herblain to Opelousas (Louisiana) | 4,725.08 mi (7,604.28 km) |
| Saint-Herblain to Orange (California) | 5,584.95 mi (8,988.11 km) |
| Saint-Herblain to Orange (Texas) | 4,816.99 mi (7,752.20 km) |
| Saint-Herblain to Orange City (Florida) | 4,317.28 mi (6,947.99 km) |
| Saint-Herblain to Orangeburg (South Carolina) | 4,095.33 mi (6,590.79 km) |
