Has anyone ran a marathon with their dog??

What’s the farthest you've run with your dog? I started running because of my boy, Nico. It started with wanting him to lose a little weight, but I ended up getting hooked on running myself. It’s something I love to do because I get to share it with Nico. He is the reason why I love running and I always look forward to our long runs. It’s our time together, doing what we do best! Nico is a 4-year-old Belgian Malinois. The farthest we've run together is a half marathon 13.1m/21 km. I’m about to start marathon training soon, which means my mileage is going to increase. I want my running buddy by my side, helping me train the way he did with my first half marathon. But I also don’t want him to get hurt if his body can’t handle longer distances. So, has anyone here done marathon training with their dog? How did you go about it?

What’s the farthest you've run with your dog? I started running because of my boy, Nico. It started with wanting him to lose a little weight, but I ended up getting hooked on running myself. It’s something I love to do because I get to share it with Nico. He is the reason why I love running and I always look forward to our long runs. It’s our time together, doing what we do best! Nico is a 4-year-old Belgian Malinois. The farthest we've run together is a half marathon 13.1m/21 km. I’m about to start marathon training soon, which means my mileage is going to increase. I want my running buddy by my side, helping me train the way he did with my first half marathon. But I also don’t want him to get hurt if his body can’t handle longer distances. So, has anyone here done marathon training with their dog? How did you go about it?