This beginner half marathon plan assumes a starting fitness level of easily being able to run 7 miles per week with at least a 3-mile run. It starts off running three days per week with on cross training day and maxes out at 18 miles per week. Level Beginner Weekly Mileage Progression 7, 8.5, 9, 11, 11, 12, 13, 15.5, 13.5, 18, 16 Long Run Progression 3, 3.5, 4, 5, 5, 6, 7, 9, 10, 10, 9 Written by Coach Cory Smith