"Tu longum iter facis." is also right. I got nicked for using 'iter longum' in another exercise, and I reported it there too.

I need a little word order enlightenment, please. I've been getting it wrong for a couple of weeks. What am I missing? Is there a debate on the subject? lol. facis iter longum. I'll be in Rome for my first time next spring. Writing on rock has always held a fascination so having Duo do Latin was just in time!