To post your runs to Facebook, follow the steps below:

iOS users:
  1. Go to device Settings
  2. Scroll down and select Facebook
  3. Enter Username and Password
  4. Click Sign In
  5. Return to "Couch to 5k" or "5k to 10k" app
  6. Go to Log tab
  7. Select a workout that you would like to post
  8. On top right corner, press Share icon
  9. Select Facebook to post your runs
Android users:   
  1. Launch "Couch to 5k" or "5k to 10k" app
  2. Go to Log tab
  3. Select a workout that you would like to post
  4. On top right corner, press Share icon
  5. Select Facebook to post your runs