SkillMill Run-Walk 1:1 Intervals HIIT Horizontal Loading – Run to Walk Ratio = 1:1 – Example: Run for 30 seconds, walk for 30 seconds Show All Acute Variables ULT SkillMill time 20 mins Set Time 1 20 mins h:m:s Show Acute Variables × Click to preview an activity Share × Copy this link to share this program. Anyone with this link will be able to view the program.