| Duncan to Timberwood Park (Texas) | 336.11 mi (540.92 km) |
| Duncan to Timonium (Maryland) | 1,220.98 mi (1,964.98 km) |
| Duncan to Tinley Park (Illinois) | 732.97 mi (1,179.60 km) |
| Duncan to Tinton Falls (New Jersey) | 1,361.52 mi (2,191.16 km) |
| Duncan to Tipp City (Ohio) | 841.93 mi (1,354.95 km) |
| Duncan to Titusville (Florida) | 1,086.22 mi (1,748.10 km) |
| Duncan to Toledo (Ohio) | 920.08 mi (1,480.73 km) |
| Duncan to Tomball (Texas) | 335.26 mi (539.55 km) |
| Duncan to Tonawanda (New York) | 1,176.85 mi (1,893.95 km) |
| Duncan to Tooele (Utah) | 888.95 mi (1,430.62 km) |
| Duncan to Topeka (Kansas) | 334.00 mi (537.52 km) |
| Duncan to Torrance (California) | 1,166.13 mi (1,876.70 km) |
| Duncan to Torrington (Connecticut) | 1,431.42 mi (2,303.65 km) |
| Duncan to Totowa (New Jersey) | 1,362.76 mi (2,193.15 km) |
| Duncan to Town 'n' Country (Florida) | 1,010.70 mi (1,626.57 km) |
