| Ottawa to Roy (Utah) | 1,202.53 mi (1,935.29 km) |
| Ottawa to Royal Kunia (Hawaii) | 4,194.60 mi (6,750.56 km) |
| Ottawa to Royal Oak (Michigan) | 302.18 mi (486.31 km) |
| Ottawa to Royal Palm Beach (Florida) | 1,124.34 mi (1,809.46 km) |
| Ottawa to Royse City (Texas) | 710.22 mi (1,142.98 km) |
| Ottawa to Ruskin (Florida) | 1,010.30 mi (1,625.92 km) |
| Ottawa to Russellville (Alabama) | 477.04 mi (767.73 km) |
| Ottawa to Russellville (Arkansas) | 480.54 mi (773.36 km) |
| Ottawa to Ruston (Louisiana) | 644.69 mi (1,037.53 km) |
| Ottawa to Rutherford (New Jersey) | 766.55 mi (1,233.64 km) |
| Ottawa to Rutland (Vermont) | 821.07 mi (1,321.38 km) |
| Ottawa to Sabana Grande (Puerto Rico) | 2,062.50 mi (3,319.27 km) |
| Ottawa to Sachse (Texas) | 718.84 mi (1,156.86 km) |
| Ottawa to Saco (Maine) | 946.32 mi (1,522.96 km) |
| Ottawa to Sacramento (California) | 1,729.10 mi (2,782.72 km) |
