| Willoughby to San Luis (Arizona) | 1,927.68 mi (3,102.30 km) |
| Willoughby to San Luis Obispo (California) | 2,150.16 mi (3,460.35 km) |
| Willoughby to San Marcos (California) | 2,033.24 mi (3,272.18 km) |
| Willoughby to San Marcos (Texas) | 1,229.02 mi (1,977.92 km) |
| Willoughby to San Marino (California) | 2,051.24 mi (3,301.16 km) |
| Willoughby to San Mateo (California) | 2,175.35 mi (3,500.89 km) |
| Willoughby to San Pablo (California) | 2,167.14 mi (3,487.68 km) |
| Willoughby to San Rafael (California) | 2,175.69 mi (3,501.43 km) |
| Willoughby to San Ramon (California) | 2,151.05 mi (3,461.78 km) |
| Willoughby to San Tan Valley (Arizona) | 1,744.54 mi (2,807.57 km) |
| Willoughby to Sand Springs (Oklahoma) | 876.83 mi (1,411.12 km) |
| Willoughby to Sandusky (Ohio) | 68.31 mi (109.94 km) |
| Willoughby to Sandy (Oregon) | 2,041.25 mi (3,285.08 km) |
| Willoughby to Sandy (Utah) | 1,578.30 mi (2,540.03 km) |
| Willoughby to Sandy Springs (Georgia) | 556.57 mi (895.71 km) |
