long run vs long haul

long run and long haul both are nouns.

Word	Noun	Adjective	Verb	Adverb
long run	Yes	No	No	No
long haul	Yes	No	No	No

As nouns, long run and long haul are synonyms defined as:

long run and long haul: a period of time sufficient for factors to work themselves out

long run (noun)	long haul (noun)
a period of time sufficient for factors to work themselves out	a journey over a long distance
	a period of time sufficient for factors to work themselves out