Sounds like the OP's problem is more lack of energy than lack of time. I've been doing 60+ hours a week for about the last 25 years. My job (engineering) isn't physically demanding and I've definitely acclimated to the long hours, but I still find that the only way to have enough energy to get in a
good workout on work days is to do it in the morning.
If that means getting up at 4am, then so be it - I just go to bed earlier. I'm not a fan of riding in the dark where I live, so I do intervals on the Kurt Kinetic during the week. If you're a TV junkie, DVR your prime time or late night favorites and watch them while riding the trainer. My work hours on the weekend are usually shorter, so I can do morning group rides for a couple hours on Sat and Sun and still make it to the office by 10 or 11am.
Sufficient sleep (7 - 8 hours per night) and a good diet will also make a big difference. Remember that your BMR working those kind of hours is probably higher than average. If you're training on top of that, make sure you're not running a big caloric deficit. Watch your macros and try to minimize simple carbs and highly processed foods (often hard when working long hours). Nothing wreaks havoc on energy levels like being on a blood sugar roller coaster. Good luck! Hopefully the long hours will lead to early retirement and lots of free time to ride
