Half Marathon Trainer 13.1 21K

Contains adsIn-app purchases
769 reviews
Content rating
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About this app

■ 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, best suited for first-time half marathoners and those who are new to running. 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!

≈ 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 app will train you to complete a full 13.1 (26K) distance using a RUN/WALK strategy ★

This proven 14 week plan is designed for true beginner/novice runners who want to train for a half marathon, but have very little running experience. This run/walk program is perfect for newcomers, as the walk breaks help mentally break up the race into segments, so you can focus on one section at a time. These breaks help make the half/full marathon less grueling, as well as reduces the overall impact and risk of injury.

But don't think that just because walking is involved that your time will be slower, or that you're accomplishing less. Many veteran runners have posted personal best times after switching to this run walk method! By using a ratio of running and walking, you can manage your fatigue which gives you the muscle resource and mental confidence to handle the later parts of the race.

Slowly build strength and stamina, and the blend of walking and running together reduces the overall impact and risk of injury. By the end of the program, you will be READY for your 13.1 (21k) race!

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

★ 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
◉ 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 and distance stats
◉ Full access to C25K, 10K, 13.1, and 26.2 programs
◉ 4 apps for the price of 1!

★ Love this app? We have a complete suite of health and fitness apps that covers all your fitness needs.
7 Minute Workout - https://goo.gl/WQuX61
0-100 Pushups Trainer - https://goo.gl/IfCFCh

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

★ The Forums are a great place to ask all your fitness questions!

Questions/comments regarding the app? Please email us at contactus@zenlabsfitness.com, or visit us at www.zenlabsfitness.com.

Legal Disclaimer
This app and any information given by it or by Zen Labs LLC are for educational purposes only. They are not intended nor implied to be a substitute for professional medical advice. You should always consult your healthcare provider before beginning any fitness program.
Updated on
Sep 26, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
This app may collect these data types
Location and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

763 reviews
Destin Miller
March 27, 2024
Paid for this app before Covid and loved it. However since then it has had a few problems: (a) first it had me pay for a subscription even when I paid for the app years ago and (b) it randomly started having issues and close out of my run while I was running. The first issue solved itself, but I recently changed phones and lost access again. I really found the pacing of this app and the 10k app great. But I do not want to constantly have to pay again or lose my progress when I change the music.
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Zen Labs Fitness
March 27, 2024
Hi, we would like to fix this. As we don't have your email address, can you please write to us at contactus@zenlabsfitness.com so that we can help you better. We look forward to your email.
Nicole Pegram
May 3, 2021
Loved the app and used it for my first half marathon, but now that I got a new phone, they want to charge me a subscription fee after I purchased the app almost 2 years ago. Very disappointed. UPDATE: I emailed them to get this resolved as they recommended, and I did hear back right away. They were very kind and helpful are working to get this resolved. Will update again when resolved. UPDATE #2: Back to 5 stars. They sent me a code so that I could see every workout again! 😊
25 people found this review helpful
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Zen Labs Fitness
April 29, 2021
Hello Nicole! Can you please contact us at contactus@zenlabsfitness.com and we will offer you compensation for your purchase. Thanks!
A Google user
March 30, 2021
I bought the paid version hoping I could be on my way to running my second half marathon a little more prepared this time. Instead I got an absolutely useless application because I can't even change the sensitivity, or start my run because it crashes. I tried restarting and even reinstalling it several times without success. I would like my money back. I'm sticking to my already bought pro version of Runtastic. You guys want to ask me questions about my review 6 years after I posted it? Lol.
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Zen Labs Fitness
February 22, 2021
Could you please help answer a couple of questions, as this will help our dev team investigate: Was it the app itself that was stopped/closed, or only the notifications stopped working? During the workout, did you minimize the app to the background or locked the screen? Is battery saving/power saving mode enabled on your device?

What's new

A bunch of new updates just in time for Summer! Lets smash some goals and reach new heights of health and happiness!

Proud partners with Google WearOS and Samsung to be the featured running trainer!