| Difficult Run to Kilgore (Texas) | 1,078.67 mi (1,735.95 km) |
| Difficult Run to Killeen (Texas) | 1,270.37 mi (2,044.46 km) |
| Difficult Run to King City (California) | 2,382.42 mi (3,834.14 km) |
| Difficult Run to King of Prussia (Pennsylvania) | 133.37 mi (214.64 km) |
| Difficult Run to Kingman (Arizona) | 2,023.81 mi (3,257.01 km) |
| Difficult Run to Kings Mountain (North Carolina) | 335.91 mi (540.59 km) |
| Difficult Run to Kings Park (New York) | 256.99 mi (413.58 km) |
| Difficult Run to Kings Park West (Virginia) | 6.58 mi (10.59 km) |
| Difficult Run to Kingsburg (California) | 2,292.58 mi (3,689.55 km) |
| Difficult Run to Kingsland (Georgia) | 610.81 mi (983.00 km) |
| Difficult Run to Kingsport (Tennessee) | 328.18 mi (528.16 km) |
| Difficult Run to Kingston (New York) | 273.50 mi (440.16 km) |
| Difficult Run to Kingston (Pennsylvania) | 180.61 mi (290.66 km) |
| Difficult Run to Kingstowne (Virginia) | 14.54 mi (23.40 km) |
| Difficult Run to Kingsville (Texas) | 1,418.04 mi (2,282.11 km) |
