If Duolingo wants you to translate a sentence like this, one of the second person, shouldn't it also accept, 'Sinä olet liian kaukana'?
Yes, since english doesn't differentiate between sing. and plu. you. Report it next time in case you get it incorrect.
@Alden: But on my phone I only see the words for plural, not both sing/plur. (Sept 2020)
Heads Up Duolingo beta creators: This still needs to be corrected!