Half Marathon Trainer: 21K Run App Reviews

Have used the C to 5 and 10K with great success. Training for my first half and am excited to use this app to help me get to the finish line.

Just love this app! Anyone wanting to train for a half marathon I would highly recommend this!

I really enjoy the format of the training program and the data it provides. High five!

Great app! If you could put a km progress and a pace rate on the lock screen that would be awsome

I have been using the Couch to 5k and Couch to 10k and loves those apps. There is not one thing I like about this app. As another reviewer said, if u are not in excellent shape forget it. The couch programs have more interaction, let you know what is upcoming, and motivate you along the way. If I could return, I would. This wont help me for Maui half in Sept.

I started w/ couch to 5k and have worked up to the 21k runner. Im running my first 1/2 marathon in 6 months. The training program is great. The only thing this app is missing is Apple Watch capability. Add that and it gets 5 stars.

I really have seen some incredible improvement in my running since I began using these apps. I started with the 0-10k program, and was barely able to run the 1.5 minute intervals without feeling exhausted and out of breathe but after completing that program and getting halfway through this program, I can run way way longer and feel great afterwards. Im a little bummed there isnt a watch companion app, but its really no big deal.

Im on my third running app from fitness 22 and I love it I went from never having run more than what we did in gym class to 8 miles over the course of six months. Really easy to use and has helped me to lose Weight and actually enjoy running!!

Continuation of Couch to 5K - 10K. The only thing is if you run on a treadmill, no way to log miles manually.

I like the app as far as getting me ready for my half marathon. I am 2 weeks away from my race and I am already running the distance. I have never ran 12 miles before. The app did great in preparing me. I have 2 suggestions... I have been frustrated several times during my runs because of the forward and back buttons on the screen. I like to carry my phone as I run so I can easily see my progress. If you accidentally touch the forward or back button it will start you over or send you to the next stage of your work out! No way to go back to where you are in your run! Please either do away with those buttons, make it a two step process... "are you sure you want to start over" or have an option to go back to where you were in your run. If I am 9o minutes into a 120 minute run and my finger or once even my clothes hits the back button, your screwed unless you know the exact time you started the run after your warm up. Secondly, I wish there was a feature to keep up with distance. I have to run a second app on my phone to keep up with how far I am going and my time per mile. Would be nice to have that feature built in.

I love this app!!

I use with my Fitbit but like the exercises of different types of run. Been helpful for my half marathon.

Without question this app will help you achieve your goal of running a half marathon.

Its disappointing that this app doesnt come with the "treadmill running" option.

You wont regret getting this app!

Keeps you motivated. Very easy to use

Ran my first 1/2 last weekend and trained using this app! Was great for me and I felt ready for the 1/2. Met my goal on my time! Highly recommended.

Love this app. It helped me run my first marathon.

Used these apps first for my 10K and then for my first half marathon! I loved them both, these apps made me a runner!

This is a great app to use to train. I used the 10K app before this one and had great success.