No, because it cannot stand alone as a sentence.
No. It should be either "You have run a marathon" or "You ran a marathon".
That looks like a complete sentence to me.
The complete subject in the sentence is "Javier".
Yes, "She ran." is a complete sentence because it has a subject and a verb.
the two grils went to get a refrehment at the lemonade stand,right after they ran a marathon
I collapsed before I could finish the marathon. A marathon is a footrace of a certain distance because of some Roman guy that ran all the way from the city of Marathon, to Rome, then died on the spot. Don't let your meals become a marathon.
"Ran to the ice cream truck" is the complete predicate.
"ran"
Although she appeared to be an elderly woman, she ran faster than any of us in the marathon.
Participle Adjective
The word "is" can start a complete predicate in a sentence. For example, "She is running."
It is a little more than 42 kilometres. In 490Bc, the Greeks won at Marthon against the Persians. A soldier ran from Marathon to Athens to report on the victory. He died after the crucial sentence. In honour of that soldier, the distance and the name is the sameof the event of Marathon.