to Adelaide or Perth, by running via the Farley triangle at Maitland, and via Gulgong,Merrygoen,Dubbo
and Narromine to Goobang Junction,instead of via Cootamundra and Stockinbingal.
The differance is 210 km in favor of Merrygoen.
I can only assume they dont go that way because of the difficulty in reversing at Merrygoen.
Avoids having to run thru Sydney and also avoids the 1:40 grades up the Cowan bank.
23 tonne axle load locos are allowed all the way, albeit at 60 KMH from Gulgong to Dubbo.