I work in workouts into my regular schedule. I bike to work everyday 5 miles each way. I stop by the pool on the way to my office 2-3 times/week. My kid's daycare is 2 miles away so 3 times a week I run that with them in the stroller going long with one of the runs. I get all my base/fitness maintaining exercise in that way and do really long or breakthrough workouts on the weekend.

You'll be amazed what riding your bike 10-20 miles every day will do for your bike splits.