I tend to just do the strength workouts and then use running for cardio. How many days per week are you running? And how long have you been using Cathe workouts? I run 5-6 days per week. I tend to do a leg workout on the same day as a run. As a beginner, this may not be a good idea. With ICE, this week I have been using the muscle meltdowns each day after a run. With Ripped with Hitt, I tended to do the upper body workouts on the days I wasn't running and then would do the legs workout on a run day.
If you have a somewhat flexible schedule, you could do something like: run, upper body, lower body, rest/yoga/core, repeat. This would not fit neatly into a week, but would spread the running & lower body work out.