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16-Week Beginner Marathon Training Plan

COROS Official

This 16-week heart rate based plan focuses on building volume for a first marathon at the end of the plan. Runners should be prepared to run 5x/week from 15 to 45 miles. Wednesday and Sunday workouts are the specific marathon sessions, but feel free to switch them around based on your schedule. Because the plan is based on your Threshold HR Zones, we encourage you to complete a Running Fitness Test at the beginning to ensure you are training in the right zones. Do not hesitate to reach out to us via coach@coros.com for feedback and insights on your training journey!

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