Do you have any idea how to get your dog to stop and stay where he is from a distance? What are you going to do if he starts to run towards traffic? If you can't get him to come to a crashing halt on command, your pup could easily end up being injured or worse. Getting your pup to stay in place when he is excited can be particularly challenging.
Because of this, you need to start with short training sessions and even shorter stays in place. For this particular command, you may want to teach him a hand signal command as well as a voice command just in case he is far enough away he can't hear you clearly. This is a very important skill for your pup to master as it could save his life at some point in the future.
This one is a slightly more complicated version of 'stay' and one that can be more difficult for your pup to learn. If you haven't taught your pup to stay when he is close to you, be sure to do so before you attempt to teach him to stop at a distance. If he doesn't understand what is expected of him, there is no way you will be able to teach him to stop from a distance.
More importantly, there are several very good reasons why you might want your dog to stop in place rather than come to you upon command. For example, what if your dog has already crossed a busy street? If he attempts to come back, he risks injury a second time. On the other hand, if you can give him the stop command from your side of the street, he will be safe until you can get across the street to walk him home.
For this skill, you will need a few things, along with tons of patience, to ensure he gets it right every time you give him the command. Remember, it could save his life. This is a multiple step process, not only do you want your pup to stop right where he is at, but also to sit or lie down at the same time until you get there. You may need: