| Porthcawl to Mount Holly (North Carolina) | 3,847.01 mi (6,191.16 km) |
| Porthcawl to Mount Juliet (Tennessee) | 4,030.91 mi (6,487.13 km) |
| Porthcawl to Mount Kisco (New York) | 3,283.27 mi (5,283.91 km) |
| Porthcawl to Mount Pleasant (Michigan) | 3,624.18 mi (5,832.55 km) |
| Porthcawl to Mount Pleasant (South Carolina) | 3,913.64 mi (6,298.39 km) |
| Porthcawl to Mount Pleasant (Texas) | 4,518.77 mi (7,272.27 km) |
| Porthcawl to Mount Pleasant (Wisconsin) | 3,783.67 mi (6,089.23 km) |
| Porthcawl to Mount Prospect (Illinois) | 3,814.91 mi (6,139.51 km) |
| Porthcawl to Mount Sinai (New York) | 3,265.03 mi (5,254.55 km) |
| Porthcawl to Mount Vernon (Illinois) | 4,027.00 mi (6,480.83 km) |
| Porthcawl to Mount Vernon (New York) | 3,299.58 mi (5,310.15 km) |
| Porthcawl to Mount Vernon (Ohio) | 3,674.87 mi (5,914.13 km) |
| Porthcawl to Mount Vernon (Virginia) | 3,530.24 mi (5,681.38 km) |
| Porthcawl to Mount Vernon (Washington) | 4,644.14 mi (7,474.03 km) |
| Porthcawl to Mount Washington (Kentucky) | 3,905.59 mi (6,285.43 km) |
