| Difficult Run to Troy (Michigan) | 395.81 mi (636.99 km) |
| Difficult Run to Troy (Missouri) | 731.56 mi (1,177.33 km) |
| Difficult Run to Troy (New York) | 327.08 mi (526.39 km) |
| Difficult Run to Troy (Ohio) | 374.79 mi (603.16 km) |
| Difficult Run to Truckee (California) | 2,274.40 mi (3,660.29 km) |
| Difficult Run to Trujillo Alto (Puerto Rico) | 1,573.89 mi (2,532.93 km) |
| Difficult Run to Trumbull Center (Connecticut) | 273.07 mi (439.47 km) |
| Difficult Run to Trussville (Alabama) | 629.33 mi (1,012.81 km) |
| Difficult Run to Tualatin (Oregon) | 2,338.00 mi (3,762.65 km) |
| Difficult Run to Tuckahoe (Virginia) | 91.69 mi (147.57 km) |
| Difficult Run to Tucker (Georgia) | 516.98 mi (832.00 km) |
| Difficult Run to Tucson (Arizona) | 1,930.57 mi (3,106.95 km) |
| Difficult Run to Tucson Estates (Arizona) | 1,943.18 mi (3,127.25 km) |
| Difficult Run to Tucson Mountains (Arizona) | 1,937.72 mi (3,118.47 km) |
| Difficult Run to Tukwila (Washington) | 2,304.88 mi (3,709.34 km) |
