13 things you need to know to meet the 21KM,97m challenge half marathon. Find the motivation, set the date for your first half marathon and run the half marathon! We can all do that. Our body was born to be in motion. And since we always need a motivation, a challenge and a why, today I give you some ideas to try your first challenge!! Download the half marathon training program: https://bit.ly/2KT2kWc