| Difficult Run to Karis | 4,281.02 mi (6,889.64 km) |
| Difficult Run to Karkkila | 4,281.37 mi (6,890.20 km) |
| Difficult Run to Kauhajoki | 4,158.95 mi (6,693.19 km) |
| Difficult Run to Kauhava | 4,162.07 mi (6,698.21 km) |
| Difficult Run to Kauniainen | 4,307.68 mi (6,932.54 km) |
| Difficult Run to Kemi | 4,115.79 mi (6,623.72 km) |
| Difficult Run to Kemijarvi | 4,153.07 mi (6,683.71 km) |
| Difficult Run to Kempele | 4,166.93 mi (6,706.02 km) |
| Difficult Run to Kerava | 4,311.95 mi (6,939.42 km) |
| Difficult Run to Keuruu | 4,235.79 mi (6,816.84 km) |
| Difficult Run to Kiiminki | 4,166.28 mi (6,704.98 km) |
| Difficult Run to Kirkkonummi | 4,301.85 mi (6,923.16 km) |
| Difficult Run to Kitee | 4,390.04 mi (7,065.09 km) |
| Difficult Run to Kiuruvesi | 4,239.21 mi (6,822.34 km) |
| Difficult Run to Kivisto | 4,307.20 mi (6,931.76 km) |
