| Ottawa to Stephenville (Texas) | 816.92 mi (1,314.71 km) |
| Ottawa to Sterling (Colorado) | 750.13 mi (1,207.23 km) |
| Ottawa to Sterling (Illinois) | 54.42 mi (87.57 km) |
| Ottawa to Sterling (Virginia) | 623.86 mi (1,004.00 km) |
| Ottawa to Sterling Heights (Michigan) | 309.46 mi (498.03 km) |
| Ottawa to Steubenville (Ohio) | 432.42 mi (695.92 km) |
| Ottawa to Stevens Point (Wisconsin) | 221.97 mi (357.23 km) |
| Ottawa to Stevenson Ranch (California) | 1,683.70 mi (2,709.65 km) |
| Ottawa to Stillwater (Minnesota) | 325.65 mi (524.08 km) |
| Ottawa to Stillwater (Oklahoma) | 572.10 mi (920.71 km) |
| Ottawa to Stockbridge (Georgia) | 596.65 mi (960.21 km) |
| Ottawa to Stockton (California) | 1,733.18 mi (2,789.29 km) |
| Ottawa to Stone Ridge (Virginia) | 617.91 mi (994.43 km) |
| Ottawa to Stonecrest (Georgia) | 588.79 mi (947.57 km) |
| Ottawa to Stony Brook (New York) | 816.44 mi (1,313.93 km) |
