| Ontario to St. Simons (Georgia) | 2,106.46 mi (3,390.02 km) |
| Ontario to Stafford (Texas) | 1,326.40 mi (2,134.63 km) |
| Ontario to Stallings (North Carolina) | 2,091.11 mi (3,365.32 km) |
| Ontario to Stamford (Connecticut) | 2,434.46 mi (3,917.88 km) |
| Ontario to Stanford (California) | 346.57 mi (557.75 km) |
| Ontario to Stanton (California) | 27.66 mi (44.52 km) |
| Ontario to Star (Idaho) | 670.34 mi (1,078.81 km) |
| Ontario to Starkville (Mississippi) | 1,648.21 mi (2,652.53 km) |
| Ontario to State College (Pennsylvania) | 2,211.01 mi (3,558.28 km) |
| Ontario to Staten Island (New York) | 2,405.61 mi (3,871.46 km) |
| Ontario to Statesboro (Georgia) | 2,063.08 mi (3,320.21 km) |
| Ontario to Statesville (North Carolina) | 2,072.69 mi (3,335.68 km) |
| Ontario to Staunton (Virginia) | 2,155.06 mi (3,468.23 km) |
| Ontario to Steamboat Springs (Colorado) | 740.31 mi (1,191.42 km) |
| Ontario to Steiner Ranch (Texas) | 1,177.98 mi (1,895.77 km) |
