# Zen Labs Fitness

> Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed September 18, 2026.

> Zen Labs Fitness develops a suite of mobile fitness applications, most notably the C25K
® (Couch to 5K) app, designed to guide first-time runners and beginners through structured programs to achieve running and fitness goals, including weight loss and endurance building. They offer apps for various distances (5K, 10K, half marathon, marathon), strength training, and sleep.

- Business Profile: https://optimly.ai/brand/zen-labs-fitness
- Publisher: Optimly (https://optimly.ai)
- Dataset: Optimly AI Brand Index (https://optimly.ai/brand)
- Official website: https://zenlabsfitness.com/
- Logo: https://logo.clearbit.com/zenlabsfitness.com
- Slug: zen-labs-fitness
- Brand Authority Index tier: Emerging
- Category: Fitness and Activity Tracking Apps
- Last Analyzed: September 18, 2026