This 20-week half-marathon 2.1 intermediate training plan prepares for a HM in under 1:45 hours with 5 running days/week. Training starts at 36 km/week and peaks at 56 km/week. For each run, I provide the exact pace range. Simply set up your training zones based on your fitness level with a click of a mouse button. • Upload all workouts to your running watch • Switch plan level, free within 14 days • Free email coach support