A midnight runner?

I’ll try to paint the picture. Knee long, thin coat tied at the waist, large trousers, weighty boots and a hat with earflaps. Quite a tall, well built man running up the street and rounding a lamp-post and then continuing running down the street again. It looked heavy, like a child in oversize shoes. I really wonder what in the world he was doing, but I guess that’s just your average, normal midnight runner…