| Willoughby to Sumner (Washington) | 2,026.68 mi (3,261.63 km) |
| Willoughby to Sumter (South Carolina) | 535.35 mi (861.56 km) |
| Willoughby to Sun City (Arizona) | 1,767.08 mi (2,843.84 km) |
| Willoughby to Sun City Center (Florida) | 964.02 mi (1,551.44 km) |
| Willoughby to Sun City West (Arizona) | 1,769.26 mi (2,847.34 km) |
| Willoughby to Sun Lakes (Arizona) | 1,758.89 mi (2,830.66 km) |
| Willoughby to Sun Prairie (Wisconsin) | 413.00 mi (664.66 km) |
| Willoughby to Sun Valley (Nevada) | 2,000.28 mi (3,219.14 km) |
| Willoughby to Sun Village (California) | 2,030.23 mi (3,267.34 km) |
| Willoughby to Sunland Park (New Mexico) | 1,543.39 mi (2,483.84 km) |
| Willoughby to Sunny Isles Beach (Florida) | 1,087.74 mi (1,750.55 km) |
| Willoughby to Sunnyside (Washington) | 1,926.29 mi (3,100.07 km) |
| Willoughby to Sunnyvale (California) | 2,164.73 mi (3,483.80 km) |
| Willoughby to Sunrise (Florida) | 1,072.20 mi (1,725.54 km) |
| Willoughby to Sunrise Manor (Nevada) | 1,835.38 mi (2,953.77 km) |
