| Llantwit Major to Portage (Michigan) | 3,728.04 mi (5,999.69 km) |
| Llantwit Major to Portage (Wisconsin) | 3,816.89 mi (6,142.69 km) |
| Llantwit Major to Portales (New Mexico) | 4,800.85 mi (7,726.23 km) |
| Llantwit Major to Porterville (California) | 5,248.47 mi (8,446.60 km) |
| Llantwit Major to Portland (Maine) | 3,050.49 mi (4,909.29 km) |
| Llantwit Major to Portland (Oregon) | 4,824.70 mi (7,764.61 km) |
| Llantwit Major to Portland (Tennessee) | 4,023.22 mi (6,474.74 km) |
| Llantwit Major to Portland (Texas) | 4,892.87 mi (7,874.31 km) |
| Llantwit Major to Portsmouth (New Hampshire) | 3,096.04 mi (4,982.59 km) |
| Llantwit Major to Portsmouth (Ohio) | 3,777.94 mi (6,080.00 km) |
| Llantwit Major to Portsmouth (Virginia) | 3,592.88 mi (5,782.18 km) |
| Llantwit Major to Post Falls (Idaho) | 4,540.83 mi (7,307.75 km) |
| Llantwit Major to Potomac (Maryland) | 3,531.01 mi (5,682.61 km) |
| Llantwit Major to Potomac Park (California) | 5,285.69 mi (8,506.50 km) |
| Llantwit Major to Pottstown (Pennsylvania) | 3,413.11 mi (5,492.88 km) |
