marathon
Marathon Competition offers a longer timeline, and an opportunity for competitors to iterate and improve their solutions against open-ended problems that have no single right answer. The TCO20 Marathon Competition is on now and the top 12 competitors will win a trip to the TCO20 Finals!

Stage 1
Oct. 1, 2019 - Dec. 31, 2019Stage 2
Jan. 1, 2020 – Mar. 31, 2020Stage 3
Apr. 1, 2020 – Jun. 30, 2020