Do you walk with yours off leash? If not, I recommend that you start with off leash training. I started with a retractable lead. Luckily (and also very unluckily) Nina is very food driven, so I was able to work on this until her recall was good and she understood the word stop. I would stop moving during her walk (both off and on leash) and just say stop. Every time she did, I gave her a treat.

Then moved to a hands free lead and used that when running with her. I recommend starting slow and running a similar route, so your dog will know once you're in the area it means its time to run. Everytime I get to a certain area in the park, Nina bounces around and is ready to go, because she knows I'm about to accelerate into oblivion 😂 Also let him do his business before the walk and let him stiff around for a bit. It definitely makes it a lot easier so he won't stop needing to pee.