Yes, that is perfectly fine if you just leave it out.
Both of the phrases are correct although the first is usually used when you know someone is going to a place and the second when you don't know if they are going to an actual place.
Example: Your friend mentions they are going out shopping, you ask "Where are you going to?".
Example 2: Your friend mentions they are just going out, you ask "Where are you going?"
Where are you? is asking where one is right now. Generally, it implies that the querent and the respondent are in different locations, and the querent wishes to know the respondent's present location.
Where have you been? is asking where one was at a recent time in the past, over an undefined period. It implies nothing about the current location of either the querent or the respondent. It does imply that the querent expected the respondent to be somewhere at a specific time, but the respondent was not at the appointed place at the appointed time.
Example
(Q is Querent, R is Respondent.)
(Q is talking to R over the telephone. They have planned to meet at the train station at a specific time.)
Q: I'm at the ticket concourse, and I don't see you. Where are you?
R: Oh, I must have misunderstood you when we agreed to meet - I'm on the platform. Stay there, I'll come over to you.
(Q is Querent, R is Respondent.)
(Q is a parent, waiting at home for R, a minor, who has just returned from seeing friends - later than R had promised to be home.)
Q: I thought you were to be home by nine-o-clock! Where have you been?
R: I'm sorry; we went to the Burger Barn after getting out of the movie, and just lost track of the time talking about stuff.
Best Answer
The Japanese often use "to" ni to describe direction.
Your example question
is a shortended form of
A heading is a navagational term meaning in the direction so the "to" can be implied.
If you are driving, you might say
The British will use the term