| Pontypridd to Oakley (California) | 5,218.25 mi (8,397.97 km) |
| Pontypridd to Oakton (Virginia) | 3,542.62 mi (5,701.29 km) |
| Pontypridd to Oakville (Missouri) | 4,086.09 mi (6,575.92 km) |
| Pontypridd to Oatfield (Oregon) | 4,823.63 mi (7,762.88 km) |
| Pontypridd to Ocala (Florida) | 4,203.27 mi (6,764.51 km) |
| Pontypridd to Ocean Acres (New Jersey) | 3,380.44 mi (5,440.28 km) |
| Pontypridd to Ocean City (New Jersey) | 3,414.42 mi (5,494.97 km) |
| Pontypridd to Ocean Pines (Maryland) | 3,475.97 mi (5,594.04 km) |
| Pontypridd to Ocean Pointe (Hawaii) | 7,170.56 mi (11,539.89 km) |
| Pontypridd to Ocean Springs (Mississippi) | 4,418.17 mi (7,110.36 km) |
| Pontypridd to Oceanside (California) | 5,346.94 mi (8,605.06 km) |
| Pontypridd to Oceanside (New York) | 3,315.57 mi (5,335.89 km) |
| Pontypridd to Ocoee (Florida) | 4,206.88 mi (6,770.31 km) |
| Pontypridd to Oconomowoc (Wisconsin) | 3,799.00 mi (6,113.90 km) |
| Pontypridd to Odenton (Maryland) | 3,509.72 mi (5,648.35 km) |
