run against
US /rʌn əˈɡɛnst/
UK /rʌn əˈɡɛnst/

1.
postularse contra, competir contra
to compete against someone in an election or contest
:
•
She decided to run against the incumbent mayor in the next election.
Ella decidió postularse contra el alcalde en funciones en las próximas elecciones.
•
Our team will run against the champions in the final.
Nuestro equipo competirá contra los campeones en la final.
2.
chocar contra, golpear contra
to hit or collide with something by running
:
•
The child accidentally ran against the wall.
El niño accidentalmente corrió contra la pared.
•
Be careful not to run against the sharp edges.
Ten cuidado de no chocar contra los bordes afilados.