| Penarth to West St. Paul (Minnesota) | 3,900.86 mi (6,277.83 km) |
| Penarth to West University Place (Texas) | 4,734.23 mi (7,619.01 km) |
| Penarth to West Valley City (Utah) | 4,773.07 mi (7,681.51 km) |
| Penarth to West Whittier-Los Nietos (California) | 5,343.32 mi (8,599.24 km) |
| Penarth to Westbrook (Maine) | 3,065.20 mi (4,932.97 km) |
| Penarth to Westbury (New York) | 3,318.62 mi (5,340.80 km) |
| Penarth to Westchase (Florida) | 4,287.72 mi (6,900.41 km) |
| Penarth to Westchester (Florida) | 4,307.30 mi (6,931.93 km) |
| Penarth to Westchester (Illinois) | 3,844.50 mi (6,187.13 km) |
| Penarth to Western Springs (Illinois) | 3,847.02 mi (6,191.19 km) |
| Penarth to Westerville (Ohio) | 3,726.65 mi (5,997.46 km) |
| Penarth to Westfield (Indiana) | 3,859.46 mi (6,211.20 km) |
| Penarth to Westfield (Massachusetts) | 3,226.68 mi (5,192.83 km) |
| Penarth to Westfield (New Jersey) | 3,354.37 mi (5,398.34 km) |
| Penarth to Westlake (Ohio) | 3,627.85 mi (5,838.47 km) |
