Name the longest river in Australia.

The Murray River is recognized as the longest river in Australia, stretching approximately 2,508 kilometers (1,558 miles). It is a crucial waterway for the region, serving not only as a natural resource for irrigation and agriculture but also as a major part of the ecology and economy of southeastern Australia. The river flows through various states, including New South Wales, Victoria, and South Australia, and plays a vital role in the landscape and culture of these areas.

The significance of the Murray River extends beyond its length; it also supports diverse ecosystems and is important for recreational activities, such as fishing, boating, and tourism. Its prominence in Australian geography makes it a key reference point in understanding the country's hydrological systems and environmental health.

In contrast, while the Darling River is a significant watercourse in Australia, it is not as long as the Murray. The Burdekin and Gascoyne Rivers also hold importance in their respective regions, but neither approaches the Murray in terms of length. Hence, the Murray River stands out as the definitive answer to the question of which river is the longest in Australia.