Half Marathon- 21K Run App1.14.0 - App Store

Enhance your strength, endurance, and stamina, train for your 21k run with the best half marathon training app! 21K Run Trainer will help you become the runner you’ve always wanted to be! This is the easiest, most comprehensive and most successful half marathon training plan for you to train for your first 21K.

DETAILED 12 WEEK RUNNING PROGRAM
Our 12 week half marathon training plan will literally take you to the finish line of your first 21k run. 21K Run Trainer is a simple and powerful 1/2 marathon training app that will guide you through the whole journey with encouragement, useful tips, step- by- step interval planning, and so much more. Complete your half marathon by using the run/walk strategy and get the advice you need!

MOTIVATIONAL AUDIO COACHING
This half marathon training program starts off easy and slowly increases the runs. The real fascination of this 12 week half marathon training and running app is that it keeps you motivated and encouraged all the time. Keep your inner self in tune with your body by listening to audio coach guidance, read daily motivational quotes and enjoy great half marathon training plan!

INTEGRATED MUSIC PLAYER
Not only that you will get the motivation and information you need by using this incredible half marathon training program, but you will also be able to enjoy your favorite tracks while running and training! The running app features a built-in music player that lets you listen to your music during exercises. The audio coach gently blends in when needed, plus you get intuitive on-screen controls that make the experience even better.

TRACK & SHARE YOUR PROGRESS
Experience the pure enjoyment of running by having the best half marathon training app! If you need a half marathon training guide to reach your 21K goals easily, then 21K Run Trainer is exactly what you need. The app keeps track of your runs and achievements, it awards you with badges and gives you the opportunity to share your progress with your friends and family on any social media. Share your 12 weeks half marathon training log by Facebook, Twitter, or email, and don’t forget to invite your friends to join you!

21K RUN TRAINER FEATURES:
- Reach your 21k run goals in 12 weeks
- Follow detailed half marathon training schedule
- Uses alternating walks & runs
- Audio coach to guide & motivate you
- Repeat workouts whenever you want
- Includes a music player to listen to music while exercising
- Built-in GPS & distance tracking
- Receive cool badges for your progress
- Tracks & logs each time you do a new run
- Share achievements with friends
- Fully customizable settings
- Supports both phone & tablet devices
- Smooth on-screen controls
- Integrated health kit for a workout track
- FREE to use half marathon training plan app

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How to train for a half marathon and fully enjoy it?
It’s simple!

Get 21K Run Trainer for FREE today and just believe in yourself!

Please seek medical advice prior to commencement.

We currently offer two auto-renewing subscriptions with $0.99/week billed as a yearly $49.99 without a trail. & 7-day free trial thereafter weekly $1.49 billed as a six month $37.99.

By subscribing you get unlimited access and unlock all Training program, Transformation tracker, Diet recipes & 30 Day meal plan.

Subscriptions are set to automatically renew within the 24-hour period prior to the subscription end date. You can cancel your subscription at any moment in your iTunes account settings but refunds will not be provided for any unused portion of the terms.

App integrated with the Health kit, so you can find your activities data in the Health App.

Contact our client support via rumbleent@hotmail.com

Privacy Policy: http://rumbleenterprise.com/policy_runing.html and Terms of Service: http://rumbleenterprise.com/terms_of_use_running.html

Version History Bug fixing and performance improvement 1.14.0 12/22/2025 Bug fixing and performance improvement 1.13.0 11/29/2025 Bug fixing and performance improvement 1.12 01/17/2025 Bug fixing and performance improvement 1.11 12/28/2024 Hey runner, It’s a big update! Fixed technical glitch happen while running & in-app purchase. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.10 09/08/2022 Hey runner, It’s a big update! Fixed technical glitch happen while running & in-app purchase. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.9 07/04/2022 Hey runner, It’s a big update! Fixed technical glitch happen while running & in-app purchase. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.8 12/08/2021 Hey runner, It’s a big update! Fixed technical glitch happen while running & in-app purchase. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.7 05/15/2020 Hey runner, It’s a big update! We made app iOS 13 compatible. Even, we redesign and furnished to give you a better experience while running. Fixed technical glitch. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.6 04/09/2020 Hey runner, It’s a big update! We made app iOS 13 compatible. Even, we redesign and furnished to give you a better experience while running. Fixed technical glitch. Keep running. Follow us, share your experience, and let’s know what you feel about new update rumbleent@hotmail.com. 1.3 01/21/2020 ~ Technical correction & improvement 1.2 01/27/2019 ~ Technical correction & improvement 1.1 12/21/2018 1.0 09/09/2018