| Llanelli to Orangevale (California) | 5,134.88 mi (8,263.79 km) |
| Llanelli to Orchards (Washington) | 4,778.95 mi (7,690.98 km) |
| Llanelli to Orcutt (California) | 5,326.07 mi (8,571.48 km) |
| Llanelli to Oregon (Ohio) | 3,632.63 mi (5,846.16 km) |
| Llanelli to Oregon (Wisconsin) | 3,807.11 mi (6,126.95 km) |
| Llanelli to Oregon City (Oregon) | 4,800.19 mi (7,725.15 km) |
| Llanelli to Orem (Utah) | 4,739.39 mi (7,627.31 km) |
| Llanelli to Orinda (California) | 5,210.32 mi (8,385.20 km) |
| Llanelli to Orland Park (Illinois) | 3,808.35 mi (6,128.95 km) |
| Llanelli to Orlando (Florida) | 4,168.01 mi (6,707.77 km) |
| Llanelli to Ormond Beach (Florida) | 4,117.44 mi (6,626.37 km) |
| Llanelli to Oro Valley (Arizona) | 5,139.13 mi (8,270.63 km) |
| Llanelli to Oroville (California) | 5,099.45 mi (8,206.77 km) |
| Llanelli to Oshkosh (Wisconsin) | 3,726.23 mi (5,996.79 km) |
| Llanelli to Oskaloosa (Iowa) | 4,006.39 mi (6,447.67 km) |
