| Risca to Stephenville (Texas) | 4,714.37 mi (7,587.04 km) |
| Risca to Sterling (Colorado) | 4,469.28 mi (7,192.62 km) |
| Risca to Sterling (Illinois) | 3,913.76 mi (6,298.59 km) |
| Risca to Sterling (Virginia) | 3,551.89 mi (5,716.21 km) |
| Risca to Sterling Heights (Michigan) | 3,620.16 mi (5,826.08 km) |
| Risca to Steubenville (Ohio) | 3,623.47 mi (5,831.42 km) |
| Risca to Stevens Point (Wisconsin) | 3,783.88 mi (6,089.56 km) |
| Risca to Stevenson Ranch (California) | 5,331.85 mi (8,580.78 km) |
| Risca to Stillwater (Minnesota) | 3,880.84 mi (6,245.60 km) |
| Risca to Stillwater (Oklahoma) | 4,470.55 mi (7,194.66 km) |
| Risca to Stockbridge (Georgia) | 4,087.57 mi (6,578.31 km) |
| Risca to Stockton (California) | 5,214.80 mi (8,392.41 km) |
| Risca to Stone Ridge (Virginia) | 3,561.45 mi (5,731.60 km) |
| Risca to Stonecrest (Georgia) | 4,076.10 mi (6,559.85 km) |
| Risca to Stony Brook (New York) | 3,293.21 mi (5,299.91 km) |
