| Ontario to Salisbury (New York) | 2,435.76 mi (3,919.98 km) |
| Ontario to Salisbury (North Carolina) | 2,094.96 mi (3,371.51 km) |
| Ontario to Salmon Creek (Washington) | 849.31 mi (1,366.83 km) |
| Ontario to Salt Lake City (Utah) | 559.85 mi (901.00 km) |
| Ontario to Sammamish (Washington) | 964.91 mi (1,552.87 km) |
| Ontario to San Angelo (Texas) | 1,011.79 mi (1,628.32 km) |
| Ontario to San Anselmo (California) | 388.68 mi (625.53 km) |
| Ontario to San Antonio (Texas) | 1,162.88 mi (1,871.47 km) |
| Ontario to San Benito (Texas) | 1,309.51 mi (2,107.45 km) |
| Ontario to San Bernardino (California) | 19.21 mi (30.91 km) |
| Ontario to San Bruno (California) | 366.57 mi (589.93 km) |
| Ontario to San Buenaventura (California) | 94.31 mi (151.78 km) |
| Ontario to San Carlos (California) | 354.03 mi (569.75 km) |
| Ontario to San Carlos Park (Florida) | 2,186.90 mi (3,519.47 km) |
| Ontario to San Clemente (California) | 40.72 mi (65.54 km) |
