| Pembroke Dock to Oakley (California) | 5,164.19 mi (8,310.96 km) |
| Pembroke Dock to Oakton (Virginia) | 3,474.77 mi (5,592.10 km) |
| Pembroke Dock to Oakville (Missouri) | 4,020.63 mi (6,470.59 km) |
| Pembroke Dock to Oatfield (Oregon) | 4,773.56 mi (7,682.31 km) |
| Pembroke Dock to Ocala (Florida) | 4,134.53 mi (6,653.89 km) |
| Pembroke Dock to Ocean Acres (New Jersey) | 3,312.36 mi (5,330.73 km) |
| Pembroke Dock to Ocean City (New Jersey) | 3,346.28 mi (5,385.32 km) |
| Pembroke Dock to Ocean Pines (Maryland) | 3,407.74 mi (5,484.22 km) |
| Pembroke Dock to Ocean Pointe (Hawaii) | 7,135.84 mi (11,484.02 km) |
| Pembroke Dock to Ocean Springs (Mississippi) | 4,350.41 mi (7,001.31 km) |
| Pembroke Dock to Oceanside (California) | 5,288.79 mi (8,511.48 km) |
| Pembroke Dock to Oceanside (New York) | 3,247.60 mi (5,226.51 km) |
| Pembroke Dock to Ocoee (Florida) | 4,138.04 mi (6,659.53 km) |
| Pembroke Dock to Oconomowoc (Wisconsin) | 3,734.80 mi (6,010.58 km) |
| Pembroke Dock to Odenton (Maryland) | 3,441.83 mi (5,539.08 km) |
