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Half Marathon: 21K Runner training, 13.1 mile run trainer screenshot 1
Half Marathon: 21K Runner training, 13.1 mile run trainer screenshot 2
Half Marathon: 21K Runner training, 13.1 mile run trainer screenshot 3
Half Marathon: 21K Runner training, 13.1 mile run trainer screenshot 4
Half Marathon: 21K Runner training, 13.1 mile run trainer screenshot 5
Description
The Ultimate 1/2 Marathon training app, from the makers of award winning apps 5K & 10K Runner

Our running apps were featured CNN, Fox, USA Today, Times, Fitness Channel, AppAdvice, AppCraver, Best10Apps, Appolicious, AppOfTheDay, Apple's "New & Noteworthy" MakeUseOf, the iPhone App Review, Remix Your Health, AppShopper, Daily Motion, and so many others…

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IMPORTANT: This app is for you only if you are already able to run a 10K
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21K Runner is the easiest and most successful program in training 10K Runners to train for their first 21K. If you can do 10K, with this app you will get to 21K.

21K improves your...