>>35008958Are you playing Gold and Silver right now? Because I forget how to do it in there. Maybe just keep playing the rest of the game and hope it hatches quickly. Otherwise, remember to use a Pokemon with flame body or one of the other abilities that speed up hatching and look up the general hatching area in the game. Every game after Black and White had one until SuMo. It's usually and infinite loop, like a circle or something similar with at least one path you can travel in and not touch any NPCs when doing. You set yourself up on the path, on your bike, with your hatching ability Pokemon, and find something with a tiny bit of weight to it (like the corner of a book) to press the button down in the direction to follow the path. Then just keep an eye on it while you do other things.
In SuMo it's all about Tauros circles.