hell for leather

US /ˌhel fər ˈleðər/
UK /ˌhel fər ˈleðər/
"hell for leather" picture
1.

a toda velocidad, a toda prisa

as fast as possible; with great speed and energy

:
When the alarm sounded, everyone ran hell for leather out of the building.
Cuando sonó la alarma, todos corrieron a toda velocidad fuera del edificio.
The rider spurred his horse and galloped hell for leather across the field.
El jinete espoleó a su caballo y galopó a toda velocidad por el campo.