1. Visit the Sleep Cycle app
2. Select the Settings tab
3. Scroll to where it says 'Premium Features'
4. Below Premium Features, choose the feature tab for Runkeeper
5. Once you press the 'Runkeeper' option, it will redirect you to the Runkeeper website. There, all you have to do is log in using your Runkeeper credentials and allow the connection with Sleep Cycle!

Now, get those zzz's for the big run tomorrow!

Note: Runkeeper will not indicate that it's connected to Sleep Cycle if your phone is set to Airplane Mode.