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App Store Apps > Health & Fitness > Half Marathon 13.1 Trainer
Half Marathon 13.1 Trainer icon

Half Marathon 13.1 Trainer

by Zen Labs · Health & Fitness · Free
On the App Store since April 2012 · Data updated 2026-10-13
App Store

Half Marathon 13.1 Trainer is made and published by Zen Labs. AppBrain is an independent app data site and isn't affiliated with Zen Labs. The app name, icon, screenshots and description belong to Zen Labs and are shown as published on the App Store.

AppBrain's verdict

EstablishedLoved by users
Rating on App Store
4.73
5,593 ratings
Last updated
August 24, 2026

Users love it: 4.7 stars from 5,593 ratings.

Rankings

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Releases

Updates seen on the App Store
Version
6.5.31
Launched
April 2012

No changelog data

User feedback

Ratings and reviews on the App Store

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Technology

Found in the app by AppBrain
Price
Free
App size
318.5 MB
Content rating
Everyone

Technologies used by Half Marathon 13.1 Trainer

About the app and developer

About Half Marathon 13.1 Trainer

Half Marathon 13.1 Trainer is a health & fitness app developed by Zen Labs.

User Ratings

Half Marathon 13.1 Trainer is rated 4.73 out of 5 stars. The rating is based on 5.6 thousand ratings.

App Information

Half Marathon 13.1 Trainer is freely available from the App Store. The app size is 318.52 MB. The latest version available is 6.5.31. The last update was on August 24, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since April 2012.

Developer information for Zen Labs

Zen Labs

Address:

Frequently asked questions about Half Marathon 13.1 Trainer

Is Half Marathon 13.1 Trainer free?

Yes. Half Marathon 13.1 Trainer is free on the App Store.

Is Half Marathon 13.1 Trainer still available?

Yes. Half Marathon 13.1 Trainer is on the App Store, and the last update we saw was on August 24, 2026.

How large is Half Marathon 13.1 Trainer?

Half Marathon 13.1 Trainer is 318.52 MB.

Is Half Marathon 13.1 Trainer suitable for children?

App Store rates the content of Half Marathon 13.1 Trainer as suitable for everyone.

How do people rate Half Marathon 13.1 Trainer?

Half Marathon 13.1 Trainer scores 4.73 out of 5 stars, from 5,593 ratings on the App Store.

Who made Half Marathon 13.1 Trainer?

Half Marathon 13.1 Trainer was developed by Zen Labs. It is listed in the health & fitness category on the App Store.

What are the best alternatives to Half Marathon 13.1 Trainer?

People looking at Half Marathon 13.1 Trainer also look at these health & fitness apps: 10K Runner, Couch to 10K Run, Run With Hal, Run Half Marathon, Half Marathon- 21K Run App, Runna: Running Plans & Coach.

Share Half Marathon 13.1 Trainer

Store listing

By Zen Labs, from the App Store
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Screenshots by Zen Labs, from the the App Store listing
Description by Zen Labs Written by the developer, not by AppBrain. Click to read.
■ 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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