It's kind of amusing to see people referring to only being level 25-30 at 40 hours in, to be "blowing through the game", when just a couple days ago the same threads were about people saying they were level 50 and/or "done" with the game in under much less time. :tongue:
Me, I'm at lv 30, somewhere around the low 40's in hours. Highest skill is 1-h, at 72. Haven't gotten to Solitude yet on the main quest. (Actually, haven't been to Solitude, either of the "M" cities, or Falkreath. And I've only just stepped in the door of Riften, haven't really done anything there yet.) Still have plenty of game left to do, I'm in no rush.

What does fast traveling have to do with what level you are?
Everything. Actually exploring is going to add a lot more hours. Just fast travelling to the next location, beating things up then fast travelling to the next is going to make you level a lot faster....
Fast travel helps me explore more - I'm spending all my walking time looking around and trying to find places/people/exciting vistas, rather than walking back to Whiterun for the 80th time to sell some junk. (No, I don't consider "walk back and forth to Whiterun, along paths I've trod many times already" to be "exploring")