一个英语句子翻译~~~~~~~~

I used to walk for 3 hours those days.

尽管有这么多人答，看了一下，都有点小问题或不简洁。
I used to walk for 3 hours everyday in those days.

During those days, I needed to walk for 3 hours everyday.

During those days, I needed to walk for 3 hours everyday

That several day of I must take 3 hour road every day.

i walked for 3 hours a day in those days!