I also run, mostly 10 km, but I also ran a half marathon once. I ran before I started training calisthenics and I have to say I have the feeling that the training helped a lot for running. I feel so much stronger now and have more fun running, my joints feel strong. And I can also do pistols now, 2-3 at the moment, but getting stronger everytime. In short I think calisthenics is amazing for running.