| Difficult Run to Timberwood Park (Texas) | 1,359.01 mi (2,187.12 km) |
| Difficult Run to Timonium (Maryland) | 54.79 mi (88.18 km) |
| Difficult Run to Tinley Park (Illinois) | 581.09 mi (935.17 km) |
| Difficult Run to Tinton Falls (New Jersey) | 197.31 mi (317.54 km) |
| Difficult Run to Tipp City (Ohio) | 372.21 mi (599.01 km) |
| Difficult Run to Titusville (Florida) | 740.85 mi (1,192.28 km) |
| Difficult Run to Toledo (Ohio) | 379.92 mi (611.42 km) |
| Difficult Run to Tomball (Texas) | 1,201.96 mi (1,934.36 km) |
| Difficult Run to Tonawanda (New York) | 294.94 mi (474.66 km) |
| Difficult Run to Tooele (Utah) | 1,849.25 mi (2,976.08 km) |
| Difficult Run to Topeka (Kansas) | 984.04 mi (1,583.66 km) |
| Difficult Run to Torrance (California) | 2,288.07 mi (3,682.30 km) |
| Difficult Run to Torrington (Connecticut) | 300.59 mi (483.76 km) |
| Difficult Run to Totowa (New Jersey) | 215.81 mi (347.32 km) |
| Difficult Run to Town 'n' Country (Florida) | 810.22 mi (1,303.93 km) |
