| Sannicolau Mare to Oakley (California) | 6,176.55 mi (9,940.20 km) |
| Sannicolau Mare to Oakton (Virginia) | 4,685.00 mi (7,539.78 km) |
| Sannicolau Mare to Oakville (Missouri) | 5,203.28 mi (8,373.86 km) |
| Sannicolau Mare to Oatfield (Oregon) | 5,731.08 mi (9,223.28 km) |
| Sannicolau Mare to Ocala (Florida) | 5,351.53 mi (8,612.45 km) |
| Sannicolau Mare to Ocean Acres (New Jersey) | 4,524.75 mi (7,281.87 km) |
| Sannicolau Mare to Ocean City (New Jersey) | 4,559.14 mi (7,337.22 km) |
| Sannicolau Mare to Ocean Pines (Maryland) | 4,621.42 mi (7,437.45 km) |
| Sannicolau Mare to Ocean Pointe (Hawaii) | 7,780.64 mi (12,521.73 km) |
| Sannicolau Mare to Ocean Springs (Mississippi) | 5,559.26 mi (8,946.76 km) |
| Sannicolau Mare to Oceanside (California) | 6,361.90 mi (10,238.50 km) |
| Sannicolau Mare to Oceanside (New York) | 4,459.07 mi (7,176.18 km) |
| Sannicolau Mare to Ocoee (Florida) | 5,355.35 mi (8,618.60 km) |
| Sannicolau Mare to Oconomowoc (Wisconsin) | 4,903.03 mi (7,890.66 km) |
| Sannicolau Mare to Odenton (Maryland) | 4,652.52 mi (7,487.51 km) |
