skinny people burn more calories, thats why they’re skinny.
opens can of worms
It’s more like skinny people take in only the amount of food they need. Then they burn the same amount of calories they take in, thus their weight is stable.
Basic answer is you would be less fit than Mindii so if you went the same distance in same time then Mindii would be stolling it all the way and you’d collapse in a heap at the end. You’d have burnt more calories, more effort, but mindii would still have plenty in reserve to do other things whereas you’d be shagged.
It’s all releative, i’m sure mindii would be pretty bored going along at your pace.