The Murrumbidgee River is usually considered to be the third longest river in Australia after the Murray and Darling rivers. GeoAustralia gives it a length of 1,485 km calculated from the 1:250,000 National Topographic Database, or 1,482.3 km to be precise from the BoM GeoFabric.
However, I think this should be considered the second longest river in Australia after I manually traced the distance from satellite images in QGIS. From this I calculated that the Murrumbidgee River has a length of 1,615.8 km that is significantly longer than my calculated length of the Darling River at 1,546.9 km.
A mix of remote Grade II - IV rapids and flat water sections would make for an exciting journey down to Jugiong.
The main section of the river that is a tad over 1,000 km.
Once you have made it to the Murray River, it is another 117.0 km to Robinvale (VIC) / Euston (NSW), or you could organise a ride from either the VIC reserve directly opposite the mouth (4wd or high clearance?) or to paddle down to Boundary Bend that is only 14.6 km away.
Guides, Resources and References
General Overview and Location Guides
Refer to the Murray River Gear Section for a discussion about kayaking and camping gear.
Information to ensure an enjoyable and successful trip.
My Personal Journey
What to do while waiting for a vaccine or rain? With VIC reentering a lockdown and a dry winter up north, the Murrumbidgee River provided a viable alternative to the Darling or Murray.
My rambling blog and trip table for the trip.