@acco340 I aim for 3 days of lifting, 2 days of running, and 1-2 days of climbing (bouldering, I'm a real beginner) with 1-2 days of rest. I never double up lifting and running.
Monday: Run (30 minutes, slow pace) or rest
Tuesday: Lift (I follow GZCLP, which usually takes me about 45 minutes. 5x3 heavy compound lift, 3x10 lighter compound lift, 3x15 of 1-2 accessories. I walk to and from the gym, so that doubles as my warmup.)
Wednesday: Run (30 minutes, slow pace), plus climbing if I can get my act together (usually pretty brief -- 30-40 minutes bouldering)
Thursday: Lift (same as above)
Friday: Run (30 minutes, slow pace) if I didn't run Monday; otherwise rest
Saturday/Sunday: One lifting session (nonnegotiable), one climbing session (if I can), and a run if I haven't run twice that week yet. Sometimes I hike.
I've been lifting since June, running for ~10 years (usually casually, and with some long breaks), and bouldering since September.
I worked up to this schedule pretty gradually, and it's kind of surprising to type it out because it looks way more active than I consider myself being! I also walk a lot and am trying to do 15-20 min on the exercise bike some mornings (I exercise at night).
My runs are very low intensity and at a pace and distance that's comfortable for me; this adds up to 5-6 miles per week. Now that I'm trying to climb twice a week instead of once every 7-10 days, it's also more likely that I end up missing a workout here and there -- either climbing twice and running once, or running twice and climbing once.
I need at least one day of solid rest/active recovery (walking, yoga, nothing else) and sometimes two. I'm getting better at telling the difference between "I don't wanna" and "wow my body is
exhausted."