athletics

At athletics i all most won sprints but i ran at the start to fast that i got so tired and i cam 3rd .In the relays  I won becuas I v/s girls.And I did realy well on high jump. Here are some photos of people doing athletics

Who am I?

They live in 3 houses.
One is made out of straw.
The strongest house is brick.
They have curly tails.