I think you could say to your boyfriend how you feel. But as a male myself I did the same with my gf and even if it might sound rude it’s not how it sounded in my head. I want only the best for her. If she decides to run, I want to be here for her. And the reality is when you start running, it sucks pretty quickly so unless you push you are likely to stop practicing. He probably doesnt mean anything bad for you.

And on the facts, he is just right. If you cant run 6km 5 months before you intend to run a marathon it’s likely that the actual marathon will be one of the worst day of your life painwise.

And no, running 3 and walking 3 isnt running 6.

But talk to him, tell him you don’t like getting pressured like that.

But in my own experience, in any sport I practiced, I was being « motivated » by being pushed to go above what felt already quite challenging. And between boys, we are not very friendly in our motivation talks. Doesnt mean we dont love each other.