Alternate weeks \ weekends .... so one weekend it's a long run, next weekend it's a long ride. (and potentially similar for the shorter stuff during the week)
I do alternate weekends for my long runs now (more of an injury prevention thing) so on my 'shorter' weekend I can get in a long ride instead (when I am actually training on the bike ) and it seems to work ok.
Can you combine some sessions with 'normal' activities , for instance, I commute in to work 3 times a week (when training that is) .. 10 miles each way, so if I put some hard efforts in on some of those, and extend one by another 30 minutes or so it covers my midweek cycling requirements.
Also we have a wetroom in work so it means I can get out to run at lunch times aswell which again takes care of the midweek stuff without any impact to my family.
Unfortunately though, the weekend long stuff there is no getting round .. it's make friends with stupid o'clock I'm afraid !