I had run seven marathons before last weekend and had attempted to qualify for Boston in my past three marathons. After missing my BQ cut-off time by 4-6 minutes in those last three marathons, I started analyzing what I needed to change and researching different running plans. I purchased your Level 4 combo runner plan in July and used it to train for the 2019 Savannah Marathon. In Savannah, I ran my 8th marathon and ran a 3:42:18, cutting 9:12 off of my PR from 2015 and beating my last marathon time of 3:54:29! Best of all, I QUALIFIED FOR BOSTON 2021, beating my 3:50 cut-off time by over 7 minutes!