C25K® 5K Run Trainer & Coach 4+

Couch Potato to Running 5K

Zen Labs

    • 4.8 • 153.7K Ratings
    • Free
    • Offers In-App Purchases


■ The OFFICIAL C25K® (Couch to 5K) program with millions of success stories!
■ Official partners and 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, The Verge, Lifehacker, WebMD and many more!

"C25K is easy to use, as you would hope for a beginner app." - New York Times

"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

Our community is our priority. Questions? Comments? Suggestions? See why our community has made us the #1 5K training app. contactus@zenlabsfitness.com

≈ Real-Life Inspirational Transformations ≈
◎ Over 185,000 Likes and 1500 Success Photos at facebook.com/c25kfree
◎ Our community inspires one another (and inspires us!) everyday. Hear 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

"I'm now down 50 pounds from when I began C25K in August. I've gone through the program 3 times increasing my speed by a half MPH each time." - Claire

C25K® is the easiest program to get beginners from couch potatoes to 5K distance runners in 8 weeks.

The proven C25K program was designed for inexperienced runners who are just beginning. The plan's structure prevents new runners from giving up and challenges them to continue moving forward. C25K works because it starts with a mix of running and walking, gradually building up strength and stamina.

≈ Less is More ≈
◎ First week free! Easy to learn. Just press start!
◎ Ideal for first-time runners
◎ 30 minutes a day, 3 days a week, 8 weeks total. Millions have finished their first 5K. You will too!

≈ Features ≈
◉ 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 apps
◉ Unlock calories, distance, Apple watch integration, and more
◉ One subscription unlocks all our apps!

≈ 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:

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

What’s New

Version 5.3.14

◎ New Apple Watch App
◎ Minor bug fixes and optimization

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. contactus@zenlabsfitness.com

Ratings and Reviews

4.8 out of 5
153.7K Ratings

153.7K Ratings

JuliaJoySmith ,


I’ve wanted to get in shape for years but was convinced that I should resign myself to just being frumpy. When one of my kids joined track, I remembered how much I loved track when I was the same age. (At all other ages before and after I didn’t like running though lol) I’ve made small efforts here and there to adjust my lifestyle so that I could be healthier for myself and my family. Fear of actually winding up overweight and frumpy for the rest of my life, and fear that I’d never get energy back, be at a healthy weight, or see my actual knees and have real calves again, led me to decide to use the C25K program. I was surprised how many people hadn’t heard of the program, but I’ve been sharing it through social media and through word of mouth whenever I finish a session. The app makes it easy to share to social media so that my friends and family can cheer me on and keep me accountable, while giving me pride in seeing what I’ve accomplished. There’s a community area of other people using the program, and even a place on the app to locate local 5K runs to sign up for so you have a goal to push towards! I’m excited about continuing my journey, and happily surprised at how easy it is. I recommend setting up a playlist on your music since the app chooses the same series of songs otherwise. Just trust yourself to get the first few steps out of the door and let the app do the rest! HAPPY RUNNING!

Amanda Koz ,

DO IT!!!

I never ever write reviews because I don’t care about this kind of thing enough usually to do that. But this app truly changed my life. I hate running. I hate exercising. I also hate feeling fat and gross after having three kids so I decided to make an effort by exercising. The problem is, I’m 33 years old and have never truly put effort into any kind of exercise so my body was all around out of shape. This app helped me completely ease into becoming a regular runner. I am one day away from completing the program and I’ve lost almost 20 lbs. I have WAY more energy to play with my kids and I feel like a better person all around. I plan to start the 10K training after I finish the 5k (today!) and I’m feeling so proud of myself. If you’re willing to just do the dang thing, you’ll find that you actually can. Don’t tell yourself that you’re not a runner. Don’t tell yourself that you’re too fat or out of shape to do this...trust me, if I can, you can too. My closest friends and family are now doing this app because I can’t stop talking about it...and guess what, they’re losing weight and getting healthy too! JUST DO IT!!!!

Daalgrim ,

Back into shape and an active life

I used to be an avid runner- my Mile was down to 4:50 pace. As you get older, muscles and dynamics change especially if one does not keep up with fitness. I was trying to get back down to 6min but was going about it the wrong way with a slow jog and getting mileage in. It was frustrating and would take a lot of time just to run. I couldn’t keep at it because I also had this sore on the side of my knee. Come to find out I was going about my run all wrong because of my defeated mentality.
This app has changed all that. The mixture of walking and jogging encourages a faster pace and to kick up your knees. The reason; because it’s only 30 min- it’s like that carrot dangling to encourage one to run harder and correctly to build not only calve and thigh muscles, but also the glutes. I cannot emphasize enough on how this app encourages kicking up my knees and picking up my pace during the running portion, thus targets the correct muscles and taking pressure off my knees. Because of all those factors, I can remain consistent and actually look forward to it. I still don’t like running- but 30 min isn’t that long and is a nice escape either with music or talk radio. The best part- being active helps me keep up with my son when I’m playing with him. Just 30 min of my own three days a week- enables me to go the extra mile with my son after a difficult day at work.

App Privacy

The developer, Zen Labs, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Location
  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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