C25K ® – 5K Trainer by Zen Labs LLC

C25K ® – 5K Trainer by Zen Labs LLC

A look into C25K®, the #1 5K trainer app. C25K® is the ideal training program for beginners and first time runners. It reduces the overall impact and risk of injury. Training only 3 days a week for 8 weeks will make you stronger and healthier.

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