| Difficult Run to Kortenberg | 3,881.71 mi (6,247.00 km) |
| Difficult Run to Kortrijk | 3,831.62 mi (6,166.39 km) |
| Difficult Run to Kraainem | 3,879.18 mi (6,242.94 km) |
| Difficult Run to Kruibeke | 3,865.02 mi (6,220.14 km) |
| Difficult Run to Kuurne | 3,831.94 mi (6,166.91 km) |
| Difficult Run to La Bruyere | 3,902.51 mi (6,280.49 km) |
| Difficult Run to La Calamine | 3,945.74 mi (6,350.05 km) |
| Difficult Run to La Louviere | 3,878.28 mi (6,241.49 km) |
| Difficult Run to Laarne | 3,850.66 mi (6,197.04 km) |
| Difficult Run to Laeken | 3,874.67 mi (6,235.68 km) |
| Difficult Run to Lanaken | 3,926.48 mi (6,319.06 km) |
| Difficult Run to Landen | 3,907.21 mi (6,288.05 km) |
| Difficult Run to Lebbeke | 3,861.87 mi (6,215.08 km) |
| Difficult Run to Lede | 3,857.32 mi (6,207.76 km) |
| Difficult Run to Ledegem | 3,825.43 mi (6,156.43 km) |
