| Caldicot to Odessa (Texas) | 4,904.19 mi (7,892.53 km) |
| Caldicot to Ogden (Utah) | 4,749.38 mi (7,643.39 km) |
| Caldicot to Oildale (California) | 5,299.25 mi (8,528.32 km) |
| Caldicot to Ojus (Florida) | 4,305.08 mi (6,928.36 km) |
| Caldicot to Okemos (Michigan) | 3,682.57 mi (5,926.52 km) |
| Caldicot to Oklahoma City (Oklahoma) | 4,534.50 mi (7,297.57 km) |
| Caldicot to Okmulgee (Oklahoma) | 4,469.29 mi (7,192.62 km) |
| Caldicot to Olathe (Kansas) | 4,261.58 mi (6,858.35 km) |
| Caldicot to Old Jamestown (Missouri) | 4,089.45 mi (6,581.33 km) |
| Caldicot to Oldsmar (Florida) | 4,306.29 mi (6,930.30 km) |
| Caldicot to Olean (New York) | 3,473.25 mi (5,589.66 km) |
| Caldicot to Olive Branch (Mississippi) | 4,259.88 mi (6,855.61 km) |
| Caldicot to Olivehurst (California) | 5,170.66 mi (8,321.37 km) |
| Caldicot to Olney (Maryland) | 3,546.29 mi (5,707.20 km) |
| Caldicot to Olympia (Washington) | 4,756.91 mi (7,655.51 km) |
