Just finished my first half marathon 21km time: 2hr 12m 29s, I ate 2 batons and 1 large banana, feeling great, avg pace 5:45 min/km, at 15 years old what's your excuse ? ''You can achieve anything if you actually try your best, but do you?'' but some of you may wonder ''but David why didn't you ran an official one?'' the answer is simple I am not qualified. For a half marathon you have to be 18 or older, so i am basically smashing everybody asses before they even started.