It is TOTALLY possible to break that 4 hour marathon time! Learn how to run a sub 4 marathon using these training tips.
And be SURE to download our ULTIMATE marathon training guide below. It's FREE!
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TRY our Training Club for FREE - Complete training programs with daily videos and coaching support!
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Then, download our FREE mobile app with all our training content!
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Check out one of our best videos yet: "How To Run Properly For Long Distance | 4 Important Tips"
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