What prizes where given to the winners of ancient Olympic events?

Answer 1

They were given an Olive Branch, and were received major honor throughout Greece.

They were granted with large sums of money and would be made a statue of themselves. Poets would sing odes in their praise. :))

Answer 2

The final day winners of the Ancient Olympics Games in Greece would be rewarded with olive leaves near the temple of Zeus and maybe a purple silk robe or/and money

Answer 3

A head wreath.