I bike to work every day I go into the office, so that's 12km of biking a 3 - 4 days a week. Beyond that, me and my fiancee are currently training for a 5k run, so we run about 5k every other day or so as part of couch to 5k, and that will probably grow larger once we stop sucking so hard at running (I ran casually a few years ago, but this most recent attempt started about a month ago). Usually we aim to go for a run at dusk, so I'll get home from work and catch my breath from my commute for 20 minutes before going for the run.
Other than that I've always been fond of hitting the gym at about 9 - 9:30 in the evening. It's relatively quiet, I can get my workout done reasonably quickly, and I tend to be more awake then than in the morning.