I've made a real effort this past 3 years or so to go on interesting trips away, daytrips etc and it still feels like time has gone fast. Time flies when you're having fun - it goes quicker the more fun you have!
I find that having a lot of little milestones/landmark dates throughout the year seems to make the weeks pass really quickly. When you have the year broken up with school term dates I find that adds to that effect.
e.g. for me 'milestone' dates are things like house guests, special occasions, school holidays, and actual holidays away. I live abroad so I always have about 3 visits home to look forward to per year as well as visitors coming to me. So my year will be like:
Jan - Slow and depressing
Feb - 2 week school holiday, visit my family one week, visit in-laws the second week
Mar - Not much (Easter some years)
April - Easter, more school holidays, family may come to visit me
May - My birthday, DS1's birthday, sometimes have a weekend away
June - DS2's birthday, nice weather, lots of nice days out
July - DH's birthday, school holiday starts, go and visit family
August - school starts back again
September - still nice weather usually, more days out
October - school holiday, wedding anniversary, go and visit family
November - family coming to visit us, autumny events in town equivalent to Halloween or Bonfire night in the UK
December - loads of Christmassy stuff happening, school holiday
I am a SAHM so my life involves a fair amount of drudgery and repetition but when there are only like 2 weeks in between a lot of those interesting things, the weeks go so fast.