| Sun Prairie to Smithville (Missouri) | 381.18 mi (613.44 km) |
| Sun Prairie to Smyrna (Delaware) | 756.23 mi (1,217.04 km) |
| Sun Prairie to Smyrna (Georgia) | 692.28 mi (1,114.12 km) |
| Sun Prairie to Smyrna (Tennessee) | 518.81 mi (834.95 km) |
| Sun Prairie to Snellville (Georgia) | 703.35 mi (1,131.94 km) |
| Sun Prairie to Snoqualmie (Washington) | 1,598.98 mi (2,573.30 km) |
| Sun Prairie to Snyder (Texas) | 961.35 mi (1,547.14 km) |
| Sun Prairie to Socastee (South Carolina) | 857.02 mi (1,379.24 km) |
| Sun Prairie to Socorro (Texas) | 1,224.16 mi (1,970.09 km) |
| Sun Prairie to Soddy-Daisy (Tennessee) | 588.99 mi (947.88 km) |
| Sun Prairie to Solana Beach (California) | 1,668.01 mi (2,684.40 km) |
| Sun Prairie to Soledad (California) | 1,754.56 mi (2,823.69 km) |
| Sun Prairie to Solon (Ohio) | 417.20 mi (671.41 km) |
| Sun Prairie to Somers Point (New Jersey) | 804.24 mi (1,294.30 km) |
| Sun Prairie to Somerset (Kentucky) | 486.92 mi (783.62 km) |
