| Pontypridd to Oak Harbor (Washington) | 4,662.65 mi (7,503.80 km) |
| Pontypridd to Oak Hills (Oregon) | 4,823.31 mi (7,762.37 km) |
| Pontypridd to Oak Lawn (Illinois) | 3,833.50 mi (6,169.43 km) |
| Pontypridd to Oak Park (California) | 5,341.30 mi (8,595.99 km) |
| Pontypridd to Oak Park (Illinois) | 3,827.03 mi (6,159.01 km) |
| Pontypridd to Oak Park (Michigan) | 3,621.53 mi (5,828.28 km) |
| Pontypridd to Oak Ridge (Florida) | 4,207.27 mi (6,770.95 km) |
| Pontypridd to Oak Ridge (New Jersey) | 3,333.99 mi (5,365.53 km) |
| Pontypridd to Oak Ridge (Tennessee) | 3,963.38 mi (6,378.45 km) |
| Pontypridd to Oakdale (California) | 5,205.17 mi (8,376.91 km) |
| Pontypridd to Oakdale (Minnesota) | 3,879.94 mi (6,244.15 km) |
| Pontypridd to Oakland (California) | 5,245.82 mi (8,442.33 km) |
| Pontypridd to Oakland (New Jersey) | 3,323.50 mi (5,348.66 km) |
| Pontypridd to Oakland Park (Florida) | 4,268.27 mi (6,869.12 km) |
| Pontypridd to Oakleaf Plantation (Florida) | 4,141.07 mi (6,664.40 km) |
