| Llanelli to San Luis Obispo (California) | 5,311.45 mi (8,547.95 km) |
| Llanelli to San Marcos (California) | 5,316.24 mi (8,555.66 km) |
| Llanelli to San Marcos (Texas) | 4,779.91 mi (7,692.52 km) |
| Llanelli to San Marino (California) | 5,292.42 mi (8,517.33 km) |
| Llanelli to San Mateo (California) | 5,233.16 mi (8,421.96 km) |
| Llanelli to San Pablo (California) | 5,210.68 mi (8,385.78 km) |
| Llanelli to San Rafael (California) | 5,214.62 mi (8,392.12 km) |
| Llanelli to San Ramon (California) | 5,209.57 mi (8,383.99 km) |
| Llanelli to San Tan Valley (Arizona) | 5,118.83 mi (8,237.97 km) |
| Llanelli to Sand Springs (Oklahoma) | 4,390.49 mi (7,065.82 km) |
| Llanelli to Sandusky (Ohio) | 3,612.78 mi (5,814.20 km) |
| Llanelli to Sandy (Oregon) | 4,787.85 mi (7,705.30 km) |
| Llanelli to Sandy (Utah) | 4,729.88 mi (7,612.00 km) |
| Llanelli to Sandy Springs (Georgia) | 4,027.95 mi (6,482.35 km) |
| Llanelli to Sanford (Florida) | 4,149.97 mi (6,678.73 km) |
