| Ottawa to Washington (Indiana) | 206.16 mi (331.78 km) |
| Ottawa to Washington (Missouri) | 225.77 mi (363.34 km) |
| Ottawa to Washington (Pennsylvania) | 456.14 mi (734.08 km) |
| Ottawa to Washington (Utah) | 1,346.67 mi (2,167.26 km) |
| Ottawa to Washington Court House (Ohio) | 310.29 mi (499.37 km) |
| Ottawa to Washougal (Washington) | 1,693.22 mi (2,724.97 km) |
| Ottawa to Watauga (Texas) | 746.91 mi (1,202.03 km) |
| Ottawa to Waterbury (Connecticut) | 816.62 mi (1,314.23 km) |
| Ottawa to Waterloo (Illinois) | 219.90 mi (353.90 km) |
| Ottawa to Waterloo (Iowa) | 197.52 mi (317.88 km) |
| Ottawa to Watertown (New York) | 679.91 mi (1,094.22 km) |
| Ottawa to Watertown (South Dakota) | 486.04 mi (782.21 km) |
| Ottawa to Watertown (Wisconsin) | 126.80 mi (204.07 km) |
| Ottawa to Watertown Town (Massachusetts) | 909.21 mi (1,463.23 km) |
| Ottawa to Waterville (Maine) | 991.39 mi (1,595.49 km) |
