BEST FOR: First-time marathoners
PREREQS: Runs of at least 45-60 minutes 3-4 days of the week for at least eight weeks; injury-free. Previous race experience is not mandatory, but having a half-marathon under your soles will be helpful for perspective as your runs get longer.
NUMBER OF WEEKS: 20
Heart + Sole: Marathon, Level 1 is a 20-week program suitable for all runners wanting to take on the motherlode of all races: the marathon. You’ll learn—or continue—to train by heart rate, using your individual zones, calculated by regular testing, to moderate your effort appropriately. You’ll spend plenty of time 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.