How do you know you burned 1 qt?
Assuming you did (nothing you've stated leads to that conclusion, but just for the sake of discussion) given your drain interval and the type of driving you describe, I don't see anything too extraordinary.
Your hypothetical use rate is about 750 ml per 3000 miles or less. This is about the same as mine with similar driving habits, but I use a less volatile oil with a narrower W spread (I use 10W-30 while you use the wider-spread 5W-30).
Going only from what you've posted, I strongly suspect you use even less oil than you've stated so far. Did you replenish the oil as you went along in the drain interval? Did you add a full 1 qt during that time?