Answer:
Yes it is a Gerund Sentence.
Explanation:
It's made up of the gerund running and the direct object marathons.
Hyperbole it's exaggerating it's not metaphor or simile since it's not comparing two things and personification is giving human like qualities to inhuman things and it's not doing that either
Third I think???!?? Bc it’s the person walked into which is describing the actions meaning third
