| Ottawa to Superior (Colorado) | 860.57 mi (1,384.95 km) |
| Ottawa to Superior (Wisconsin) | 402.68 mi (648.05 km) |
| Ottawa to Surprise (Arizona) | 1,393.41 mi (2,242.47 km) |
| Ottawa to Susanville (California) | 1,652.29 mi (2,659.11 km) |
| Ottawa to Sussex (Wisconsin) | 126.74 mi (203.97 km) |
| Ottawa to Suwanee (Georgia) | 567.53 mi (913.36 km) |
| Ottawa to Swansea (Illinois) | 203.29 mi (327.16 km) |
| Ottawa to Sweetwater (Florida) | 1,179.61 mi (1,898.40 km) |
| Ottawa to Sweetwater (Texas) | 885.28 mi (1,424.72 km) |
| Ottawa to Sycamore (Illinois) | 44.85 mi (72.18 km) |
| Ottawa to Sylacauga (Alabama) | 582.28 mi (937.08 km) |
| Ottawa to Sylvania (Ohio) | 265.75 mi (427.68 km) |
| Ottawa to Syosset (New York) | 797.87 mi (1,284.05 km) |
| Ottawa to Syracuse (New York) | 658.85 mi (1,060.32 km) |
| Ottawa to Syracuse (Utah) | 1,204.50 mi (1,938.45 km) |
