| Caldicot to Oakley (California) | 5,236.95 mi (8,428.05 km) |
| Caldicot to Oakton (Virginia) | 3,567.21 mi (5,740.87 km) |
| Caldicot to Oakville (Missouri) | 4,109.55 mi (6,613.68 km) |
| Caldicot to Oatfield (Oregon) | 4,840.75 mi (7,790.43 km) |
| Caldicot to Ocala (Florida) | 4,228.36 mi (6,804.89 km) |
| Caldicot to Ocean Acres (New Jersey) | 3,405.15 mi (5,480.05 km) |
| Caldicot to Ocean City (New Jersey) | 3,439.16 mi (5,534.79 km) |
| Caldicot to Ocean Pines (Maryland) | 3,500.77 mi (5,633.94 km) |
| Caldicot to Ocean Pointe (Hawaii) | 7,181.57 mi (11,557.63 km) |
| Caldicot to Ocean Springs (Mississippi) | 4,442.72 mi (7,149.87 km) |
| Caldicot to Oceanside (California) | 5,367.28 mi (8,637.81 km) |
| Caldicot to Oceanside (New York) | 3,340.22 mi (5,375.57 km) |
| Caldicot to Ocoee (Florida) | 4,232.03 mi (6,810.80 km) |
| Caldicot to Oconomowoc (Wisconsin) | 3,821.92 mi (6,150.79 km) |
| Caldicot to Odenton (Maryland) | 3,534.34 mi (5,687.96 km) |
