I have a 10km walk with some elevation in the nearby woods, I do it several times a week if possible (it takes me ~2 hours). I listen to podcasts during the walks. A few times a months I try to do a fast pace ~20km walk in mountains. Currenly I don’t have issues going 30km fast pace without stopping. A few times a year I do multi-day long distance walks (with some 50-60km days). It seems to bring me a lot of inner peace and better sleep.