Repetition in Awards and Extracurriculars Section

If I write about an award in the awards section, should I write about it in the extracurriculars?

At an international robotics competition, I’ve gotten first and third place in 10th and 11th grade, respectively.

Should I mention both in the awards section and not the EC’s? Or both? Or should I just mention the 1st place in the awards section and the other in the EC section?