| Llantrisant to Oak Harbor (Washington) | 4,664.98 mi (7,507.56 km) |
| Llantrisant to Oak Hills (Oregon) | 4,825.54 mi (7,765.96 km) |
| Llantrisant to Oak Lawn (Illinois) | 3,834.02 mi (6,170.26 km) |
| Llantrisant to Oak Park (California) | 5,342.88 mi (8,598.53 km) |
| Llantrisant to Oak Park (Illinois) | 3,827.56 mi (6,159.86 km) |
| Llantrisant to Oak Park (Michigan) | 3,621.89 mi (5,828.87 km) |
| Llantrisant to Oak Ridge (Florida) | 4,206.61 mi (6,769.88 km) |
| Llantrisant to Oak Ridge (New Jersey) | 3,333.84 mi (5,365.29 km) |
| Llantrisant to Oak Ridge (Tennessee) | 3,963.34 mi (6,378.38 km) |
| Llantrisant to Oakdale (California) | 5,207.00 mi (8,379.86 km) |
| Llantrisant to Oakdale (Minnesota) | 3,880.90 mi (6,245.71 km) |
| Llantrisant to Oakland (California) | 5,247.71 mi (8,445.37 km) |
| Llantrisant to Oakland (New Jersey) | 3,323.34 mi (5,348.40 km) |
| Llantrisant to Oakland Park (Florida) | 4,267.40 mi (6,867.72 km) |
| Llantrisant to Oakleaf Plantation (Florida) | 4,140.53 mi (6,663.53 km) |
