BEST FOR: Experienced runners seeking a challenge and perhaps a marathon PR
PREREQS: Runs of at least 60 minutes 4 days of the week for at least 12 weeks; injury-free; marathon experience within the last 18 months. We recommend having completed a Heart + Sole: Level I program (10K, half-marathon, or marathon).
NUMBER OF WEEKS: 20
In Heart + Sole: Marathon, Level 2, you’ll continue to train by heart rate, using your individual zones, calculated by regular testing, to moderate your effort appropriately. You’ll spend a couple of runs weekly in the lower zones, building your endurance base; you’ll also spend some time climbing hills, finding different gears with pick-ups and intervals, and practicing your race pace so that you’re ready to thrive on race day.