| Porthcawl to Grand Prairie (Texas) | 4,623.46 mi (7,440.74 km) |
| Porthcawl to Grand Rapids (Michigan) | 3,686.23 mi (5,932.41 km) |
| Porthcawl to Grand Rapids (Minnesota) | 3,790.46 mi (6,100.15 km) |
| Porthcawl to Grand Terrace (California) | 5,295.43 mi (8,522.17 km) |
| Porthcawl to Grandview (Missouri) | 4,218.10 mi (6,788.38 km) |
| Porthcawl to Grandview (Washington) | 4,697.41 mi (7,559.74 km) |
| Porthcawl to Grandville (Michigan) | 3,692.84 mi (5,943.06 km) |
| Porthcawl to Granger (Indiana) | 3,759.50 mi (6,050.33 km) |
| Porthcawl to Granite Bay (California) | 5,153.67 mi (8,294.04 km) |
| Porthcawl to Granite City (Illinois) | 4,054.97 mi (6,525.84 km) |
| Porthcawl to Grants Pass (Oregon) | 5,009.83 mi (8,062.55 km) |
| Porthcawl to Grantsville (Utah) | 4,773.00 mi (7,681.41 km) |
| Porthcawl to Grapevine (Texas) | 4,612.98 mi (7,423.87 km) |
| Porthcawl to Grass Valley (California) | 5,123.76 mi (8,245.90 km) |
| Porthcawl to Grayslake (Illinois) | 3,806.11 mi (6,125.35 km) |
