This 20-week Marathon Training Plan is for runners looking to take on the most rewarding and challenging distance. Embarking on the journey to run your first (or second) marathon, is an exhilarating and transformative experience. With this 20-week marathon training plan, you will build endurance, speed, strength, and confidence required to cross that finish line. Whether you’re lacing up your shoes for the first time or have completed a few runs here and there, this plan is your roadmap to success!