Yes, I ran intensively from my 20s, trained with a club & competed at the weekends.
I kept going but reduced it when pregnant but never got back to the same levels of running after pregnancy.
When I had my 3rd child (eldest was just turning 4), I felt I needed to build back up my muscle strength. I weighed the same but didn't feel toned. I started HIIT then, and shortly afterwards changed to HIIT / circuit 3 days & running 2 - 3 days.
Until early 40s I kept running long distance & then started to get injuries which were hard to manage.
Now (46) I love my classes - Spin, Strength, HIIT - all have some element of weights (including the Spin). I have recently increased my exercise to 7 days - 6 days of classes & 1 run which I use as recovery. I think I'd like to do one more run but loath to do less classes!
I do 7 days as I feel I need it truthfully to manage my body shape & weight (for me exercise is key in that) but also I think it's so important for women to ensure they are doing weights & intensive cardio to manage bone density, continued balance & stability & stave off weight on the middle. Running is a great form of exercise but will not do all of this.
In short - yes, I do think switching exercise & combining more is a great idea!