n. , informal 1. A long distance or trip. It is a long haul to drive across the country. Contrast SHORT HAUL. 2. A long length of time during which work continues or something is done; a long time of trying. A boy crippled by polio may learn to walk again, but it may be a long haul. Often used in the phrase "over the long haul". Over the long haul, an expensive pair of shoes may save you money.
Antonym: SHORT HAUL.