YOU SAID:
I am about to go to a cubing competition in two hours.
INTO JAPANESE
私は2時間でcubingコンテストに行くところです。
BACK INTO ENGLISH
I am going to a cubing contest in 2 hours.
INTO JAPANESE
私は2時間後にキュービングコンテストに行きます。
BACK INTO ENGLISH
I will go to the cubing contest two hours later.
INTO JAPANESE
2時間後にキュービングコンテストに行きます。
BACK INTO ENGLISH
After 2 hours we will go to a cubing contest.
INTO JAPANESE
2時間後、キュービングコンテストに参加します。
BACK INTO ENGLISH
Two hours later, we will enter a cubing contest.
INTO JAPANESE
2時間後、キュービングコンテストに参加します。
BACK INTO ENGLISH
Two hours later, we will enter a cubing contest.
That didn't even make that much sense in English.