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Last updated on: 2026-07-07
App Store Apps > Health & Fitness > Half Marathon 13.1 Trainer
Half Marathon 13.1 Trainer icon

Half Marathon 13.1 Trainer

6.5.30
Zen Labs
4.73
5,544 reviews
Free

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4.73 · 5,544 reviews
Download from the App Store

About Half Marathon 13.1 Trainer

Half Marathon 13.1 Trainer is an overall app developed by Zen Labs.

Download Statistics

User Ratings

Half Marathon 13.1 Trainer is rated 4.73 out of 5 stars. The rating is based on 5.5 thousand ratings.

App Information

Half Marathon 13.1 Trainer is FREE to download. The APK download size is 318.52 MB. The latest version available is 6.5.30. The last update was on June 15, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play April 2012.

Description
■ The Official Half Marathon Trainer App
■ Official partners and the ONLY C25K (Couch to 5K) app featured on FITBIT and SAMSUNG smart watches!
■ Featured on The New York Times, Los Angeles Times, The Washington Post, The Guardian, The Huffington Post, Men's Fitness, Forbes, Mashable, Glamour Magazine, Popsugar Fitness, CBS News, NBC News, Macworld, Cosmopolitan, Lifehacker, WebMD, and many more!

From the same makers of the #1 C25K® Trainer app, Half Marathon Trainer follows the same successful recipe to create an easy simple 13.1 (21k) program. Ideal for first-time beginners and those who are new to running a half marathon. The program uses a blend of running and power walking in training and racing. You’ll soon be able to run-walk the entire half marathon.

≈ Free Trial ≈
◉ Train the first week for free!
◉ Train to complete a full 13.1 (21k) half marathon using a RUN/WALK ratio

≈ Real-Life Inspirational Transformations ≈
◎ Over 175,000 Likes and 1500 Success Photos at facebook.com/c25kfree
◎ Our community inspires one another (and inspires us!) everyday. Hear some of their amazing stories.

This proven 14 week plan is designed for beginners. The run/walk breaks help make the full marathon less grueling and reduces the overall impact and risk of injury.

Don’t think that just because walking is involved that your time will be slower or that you'll be accomplishing less. Many veteran runners have posted personal best times after switching to this run walk method! Using a ratio of running and walking will better manage your fatigue and give you the muscle resource and mental confidence to handle the later parts of the race.

Turn on our award winning music and just press start! Our audio coach will guide you through your run! It's that easy!

≈ Less is More ≈
◎ Easy to learn. Just press start!
◎ Ideal for beginners.
◎ 14 weeks total.

≈ Features ≈
◉ Proven 14 week half marathon training run-walk program (1st week free)
◉ Convenient audio coach and alerts
◉ Map your run at the end of your workout!
◉ Light and dark modes
◉ Health app integration
◉ Free iPad integration for indoor treadmills
◉ Integrated with Facebook, Twitter, and Instagram
◉ Access to our forums with thousands of veterans and newcomers starting the app. Join the community and meet other runners!

≈ NEW Zen Unlimited Pass - Try it for free! ≈
◉ Award winning music curated from top DJ's!
◉ Scientifically proven to increase motivation by 35%
◉ Unlimited access to all pro features across ALL Zen Labs Fitness running apps
◉ Unlock calories, distance, Apple watch integration, and more
◉ Full access to C25K, 10K, 13.1, and 26.2 programs
◉ 4 apps for the price of 1! One subscription, multiple apps!

Questions/comments? Email us at contactus@zenlabsfitness.com or visit us at www.zenlabsfitness.com.

≈ Connect ≈
Facebook: @C25Kfree
Twitter: @C25Kfree
Instagram: @officialc25k
Hashtag: #C25K

Zen Labs is a proud supporter of the National Breast Cancer Coalition. breastcancerdeadline2020.org

Subscription pricing and terms:

The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. If you subscribe before your free trial ends, the rest of your free trial period will be forfeited as soon as your purchase is confirmed.

Privacy Policy & Terms of Use:
https://www.zenlabsfitness.com/privacy-policy/

Apple Standard Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Legal Disclaimer

This app and any information given by it or by Zen Labs LLC are for educational purposes only. You should always consult your healthcare provider before beginning any fitness program.

C25K® is a registered trademark of Zen Labs LLC
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More data about Half Marathon 13.1 Trainer

Price Free to download
Rating 4.73 based on 5.5 thousand ratings
Ranking Not ranked
Version 6.5.30
App download size 318.5 MB
Suitable for Everyone

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Changelog of Half Marathon 13.1 Trainer

No changelog data

Developer information for Zen Labs

Zen Labs

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App Store Rankings for Half Marathon 13.1 Trainer

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Technologies used by Half Marathon 13.1 Trainer

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The Run Experience icon The Run Experience
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