A.T. Robertson Commentary John 20:4

"And they ran both together: and the other disciple outran Peter, and came first to the tomb;" — John 20:4 (ASV)

They both (ο δυο). "The two" (Peter and the other disciple whom Jesus loved).

Ran together (ετρεχον ομου). Imperfect active of τρεχω. It was a race in eagerness to reach the tomb of Jesus.

Outran Peter (προεδραμεν ταχειον του Πετρου). Second aorist active indicative of προτρεχω, old verb, in N.T. only here and Lu 19:4, to run on before (ahead). "He ran ahead more swiftly than Peter" (ablative case after comparative adverb ταχειον, Koine for older θασσον).

First (πρωτος). Predicative nominative (not adverb προτον) and superlative used where only two involved. John won the race.