3 days a week, I bike to the gym in the a.m. (about 15 min ride), then lift for 45-60 min, then bike to work (about 20-25 min ride). I take the direct route home for a ride of 30-35 min.

On the other days, I'll either extend my ride a bit usually only 3-10 miles on the way to or from work depending on my schedule, but on some days, I'll head right to the gym and shoot around or do some other low intensity cardio.

Bike commuting has really freed up my exercise time, because I don't have to worry about adding extra cardio time while at the gym because I've replaced the driving time to/from gym and work.

I also don't take it easy on my commutes aside from the first 3 miles to the gym in the a.m. I usually ride at about lactate threshold - I have a hard time taking it easy and riding slow.