| Ontario to Sanford (Maine) | 2,571.20 mi (4,137.95 km) |
| Ontario to Sanford (North Carolina) | 2,169.78 mi (3,491.92 km) |
| Ontario to Sanger (California) | 214.12 mi (344.60 km) |
| Ontario to Santa Ana (California) | 26.21 mi (42.18 km) |
| Ontario to Santa Barbara (California) | 123.70 mi (199.08 km) |
| Ontario to Santa Clara (California) | 335.59 mi (540.09 km) |
| Ontario to Santa Clara (Oregon) | 756.24 mi (1,217.05 km) |
| Ontario to Santa Clarita (California) | 57.16 mi (92.00 km) |
| Ontario to Santa Cruz (California) | 321.31 mi (517.09 km) |
| Ontario to Santa Fe (New Mexico) | 668.17 mi (1,075.32 km) |
| Ontario to Santa Fe (Texas) | 1,358.22 mi (2,185.85 km) |
| Ontario to Santa Fe Springs (California) | 27.14 mi (43.68 km) |
| Ontario to Santa Maria (California) | 172.95 mi (278.34 km) |
| Ontario to Santa Monica (California) | 50.09 mi (80.61 km) |
| Ontario to Santa Paula (California) | 86.19 mi (138.70 km) |
