You make your situation work for you.
Last year during my IM training I would try before work (6:00-7:00 AM) and then after work (6:00-8:30 PM). I would fall into bed by 10:00 PM and do it all over again. My long sessions were on the weekend, where I had more free time.
This year I have been training just after work (6:00- 8:30 PM) and on the weekends. I have gotten up early here and there and have run before work (just 2.5 miles- at 6:45 AM).
NOTE: I do not have kids or a husband so my time before/after work is all mine. I admire people with FAMILIES who fit training in... now THAT is impressive!
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"