Lerderderg State Park

Lerderderg State Park Victoria
IUCN category II (national park)
Lerderderg State Park
Nearest town or city	Blackwood
Coordinates	37°32′S 144°24′E / 37.533°S 144.400°E / -37.533; 144.400Coordinates: 37°32′S 144°24′E / 37.533°S 144.400°E / -37.533; 144.400
Area	142.5 km2 (55.0 sq mi)
Managing authorities	Parks Victoria
Website	Lerderderg State Park
See also	Protected areas of Victoria

Lerderderg State Park (incorporating the former Pyrete State Forest) is a 14,250-hectare park located between Bacchus Marsh and Blackwood, an hour's drive from Melbourne, Australia. There are several maintained tracks for walking through the park and camping is allowed.

The park is named for the Lerderderg River which has cut the 300 metre deep Lerderderg Gorge through sandstone and slate, almost bisecting the park.

Parks Victoria maintains six designated walks: three short walks of 3.5 km or less; Blackwood-O'Briens Crossing and return (22 km); O'Briens Crossing-Cowan Track loop (14 km); and the overnight walk O'Briens Crossing to Mackenzies Flat (20 km).

In addition, one leg of the Great Dividing Trail, the Lerderderg Track, passes through the park, entering from Blackwood in the park's northwest, and exiting south towards Bacchus Marsh. Bicycles are prohibited from one section of this track, due to a conservation area.