| Ottawa to Tacoma (Washington) | 1,697.66 mi (2,732.12 km) |
| Ottawa to Tahlequah (Oklahoma) | 501.43 mi (806.97 km) |
| Ottawa to Takoma Park (Maryland) | 644.86 mi (1,037.81 km) |
| Ottawa to Talladega (Alabama) | 567.39 mi (913.13 km) |
| Ottawa to Tallahassee (Florida) | 795.12 mi (1,279.62 km) |
| Ottawa to Tallmadge (Ohio) | 385.05 mi (619.67 km) |
| Ottawa to Tamalpais-Homestead Valley (California) | 1,798.83 mi (2,894.93 km) |
| Ottawa to Tamarac (Florida) | 1,155.24 mi (1,859.18 km) |
| Ottawa to Tamiami (Florida) | 1,180.48 mi (1,899.80 km) |
| Ottawa to Tampa (Florida) | 991.06 mi (1,594.95 km) |
| Ottawa to Tanaina (Alaska) | 2,822.26 mi (4,541.99 km) |
| Ottawa to Tanque Verde (Arizona) | 1,359.90 mi (2,188.55 km) |
| Ottawa to Tarboro (North Carolina) | 714.55 mi (1,149.95 km) |
| Ottawa to Tarpon Springs (Florida) | 974.56 mi (1,568.40 km) |
| Ottawa to Tarrytown (New York) | 776.84 mi (1,250.20 km) |
