No cannabis does not produce runners (stolon). Plants that do produce them ( strawberry, mint, and may types of grasses) are also perennials, that they go dormant in the winter but don't die. Cannabis is a annual. It dies at the end of it's life cycle and reproduces only through seeds.
Now exposed roots will turn green (green root) but I have never heard of them producing any foliage let alone a whole new plant.