The good news about your training programme is that it really need not be a lengthy affair that requires large chunks of your day and great patience to remain in the gym for extended periods.
Generally speaking, a more important factor in your training than the overall duration is the intensity at which you train. Pushing harder and raising the intensity means you can get the job done in a relatively short period of time.
This approach works for a variety of programme designs covering pretty much any training goal. If you want to improve your aerobic fitness, think about using interval training at a high intensity. This will increase your speed and muscle resistance to fatigue as well as your aerobic endurance, so more bang for your buck! If you are new to this type of training you may prefer to start with longer, aerobic intervals.
If you are focused on weight loss the same approach is more effective than conventional long slow training. You will burn more energy while training and leave your body in a higher gear, burning more calories for many hours (potentially a whole day) after training finishes. Plus you’ll see much better fitness improvements with this method.
Remember, more volume is not necessarily better and can lead to a degradation in training and results. Work hard, go home.
