Elle court à perdre haleine.
She runs like the wind.
Or
She runs until she is out of breath.
Literal translation:
She runs if to lose breath.
Perdre - to lose
La haleine - the breath
Beginner Tip: Every noun (n) is feminine (f=la) or masculine (m=le).
La haleine (nf)
Le vent - the wind (nm)
Le vent - the wind (nm)
Photo thanks to: http://lvbra.livejournal.com/pics/catalog/288/91048