■ The Official 10K Trainer App
■ Millions of success stories!
■ 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, Fox News, Macworld, Lifehacker and many more!

"Daily programs that alternate between short bursts of walking and running until you're ready to go the distance." - Forbes

"One of the highest-rated health and fitness apps... A modest, realistic workout schedule." - Men's Fitness

≈ Real-Life Inspirational Transformations ≈
- Over 150,000 Likes and 1500 Success Photos at
- Our community inspires one another (and inspires us!) everyday. Hear some of their amazing stories.

"In this last year I have lost 97 lbs, gotten off insulin and 9 other medications, completed the C25K running app and started the 10k app. Life is a blessing." - Diana

“I went from a size 16 to a size 7. I tell anyone I can about the app. because it was nothing short of a life changer.” - Amber

10K Trainer is the easiest program to get beginners from couch potatoes to 10K distance runners in just 14 weeks. By the same experts who created the #1 C25K (Couch to 5K) training app!

Don’t worry, if you are already a 5K graduate, you can skip ahead in this app and pick up where C25K app leaves off!

This proven 14 week plan will allow users to slowly build strength and stamina by alternating between walking and running. The blend of walking and running together reduces the overall impact and risk of injury, makes training more fun, keeps your body guessing, and prepares you to go the distance. By the end of the program, you will be fitter, stronger and healthier than you have ever been and will be able to run a full 10k!

Listen to your favorite music while you train and follow the program’s convenient audio alerts. Along with voice/audio alerts and music controls on your headset, just press “start”, put your device in your pocket, and you are ready to go.

≈ Features ≈
◉ BRAND NEW MUSIC curated from top DJ's, built right into the app (subscription)! Scientifically proven to increase motivation by 35%
◉ FULL featured program! Not a limited/lite version
◉ Proven 14 week program to get you running 10K
◉ Easiest 10k program at only 3 times/week
◉ Listen to your own favorite music and playlist while you train
◉ Easy and intuitive interface. Nothing to learn!
◉ Convenient audio coach and alerts
◉ Integrated with Facebook, Twitter, and Instagram
◉ Convenient access to our forums with thousands of veterans and newcomers starting the app. Join the community and meet other runners!

Questions/comments? Please email us at, or visit us at

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

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

Zen Power Playlist auto-renewing subscription:
- 1 Month: $4.99
- 1 Year: $49.99

– Payment will be charged to iTunes Account
– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
– Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
– Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
– Privacy Policy & Terms of Use:
– Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

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.

Continued use of GPS running in the background can dramatically decrease battery life.

What's New

Version 6.8.3

◎ added tips overlay to highlight locations of features
◎ calories/distance trial

Our community is our number one priority. We answer each and every email. Most of our updates have been suggestions from our community. Questions? Comments? Suggestions? See why our community has made us the #1 5K training app.

Ratings and Reviews

4.6 out of 5
745 Ratings
745 Ratings

Anyone can do it with this app


I am using this app to train for my first 10K. The program increases your running length gradually and by splitting your timed runs with walking helps to build endurance, stamina and a belief you can run. I have repeated a couple of weeks to make sure I was comfortable running the length of time. Once you get to 5k the feeling of achievement and self belief gained is enough to spur you on to continue. On my way to complete a 10K. Can’t believe I am nearly running 10K. Would advise using another app alongside for distance, speed, calories burned etc as this is dependent on your running speed. I am not fast so find as the program progresses I need to run a couple of minutes longer to ensure I cover the intended distance. There are many other free apps to complement this app. I subscribe to the music as I can find a playlist that suits my speed and as I continue to train my speed will increase so new playlists. Found the music useful as when I run further I get more songs encouraging me to reach my next goal. All in all I rated this app 5 stars Good incremental achievable increases and most of all you too will become a runner 🏃🏻‍♀️🏃‍♂️

Excellent apps very accurate


I use this app along with my Apple Watch and they both measure exactly the same with both time & distance. So joy aire what other people are using when they say it’s not accurate.
This has helped me train for an actual 10K when at first I was out of breath at 3 minutes running !! I even have asthma and it has helped me overcome my breathing issues. Thank you Zenlabs

Good little app

jamie p

Although I'm sure the timer sometimes skips forward a bit!? Earlier this week I was running for a 5 minute session and it told me to start walking after 2 mins. It usually happens on a walking session when it skips forward. I don't know how but I have confirmed it against my watch. Other than that good app that gives me the motivation to get going


Zen Labs LLC (CA)
96.3 MB
Health & Fitness
Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2018 Zen Labs Fitness
In-App Purchases
  1. Remove Ads £1.99
  2. Go To Pro £6.99
  3. Zen Music One Month £4.49


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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