Getting ready to run a marathon? This Marathon Base Building Level 1, 8-week running plan is perfect for runners looking for a fun and flexible way to build strength, speed, and endurance. Level one starts with 30-minute runs, offers speed work in weeks in weeks 4-8, and works its way up to a 90-minute long run. Running Plan in Final Surge Includes: • 3-4 days of running a week • 1-2 cross-training day(s) • 1-2 rest day(s) • 2-3 strength training days with videos