Great app with all you need to go from a 10k to a half marathon. I especially like how you can do a run meant for a different day by going to the plan and selecting what you want. My only complaint is that you cant go over the distance for a given run, so if your physical loop is 8.4 miles, the app wont let you go past 8 for that day without starting a second run. Overall, I love this app!
Gpbomont about 13.one - Half Marathon