Quote Originally Posted by Анатолий
Сколько надо туда поехать?- How long does it take to get there?
Incorrect. - Сколько времени туда ехать (или: добираться)?
You can say "Сколько туда ехать" but it'll be ambiguous, it can mean "how long" and "how far". Usually you can determine it from context. But it's ("сколько ехать") a common way to ask anyway.