Got the details on the Bluff Rd from my friends. Apparently there is 15km of dirt, not all in one go. The Somerset Region section is gravel with smoother tracks made by vehicles which should be okay to ride on. The Toowoomba Region section has been graded very recently so should be in good repair, albeit a bit dusty if it doesn't rain. Tongue02
I should be able to meet you at Crows Nest or the Maclagan turn off.