Hi Hud. If you want to do the Bacchus Marsh to Blackwood ride, it's a good climb but well worth the effort with some great views into the gorge coming up from Swans Road and you can get into Mt Blackwood now where the comms towers are for some brilliant views as well. I have logged some info on the website for the
Swans Road portion here. Theres some pictures and video of the trail on the web page to give you an idea. It's basically fire trail but its a good ride particularly on the way down as the roller coaster hills can be motored up and over. Going up it feels like its just all up (but that's just showing my age:biggrin
As for the Mount Blackwood Road, as the website says the trail is intermittent. It usually tracks from one side to the other but there are sections with none. I used to have a map of sections on the website but in a recent upgrade, I took the maps off to save a bit of time. I'll put them back up but you can see them
here. Part of the marked tracks are the Struck Oil and Red White and Blue Tracks. I put these in as the Whisky Track is off limits to bikes and hence it was put in to form a link to trails to the west of the Greendale Trentham Road to get outside the Conservation zone of the park.
Basically the tracks open in the Conservation Zone for bikes (basically the area bounded by Byers Back Track, Greendale Trentham Road and Mt Blackwood Road and anything to the east) are the Blackwood Ranges Track (Swans Road to Mt Blackwood - specifically allows bikes), any fire trails open to vehicles (not many eg Morning Star Track, Deadmans Track, Amblers Lane) and Kangaroo Track (specifically allows bikes).
When you get to the end of Mt Blackwood Road, you can head into the Charcoal Half Pipe which is like Marriners Run but formed by motorbikes running up and down the sides of a valley - best when dry as you get some bogs in the valley floor - or the Telstra Track. They are described
here. The Charcoal Track takes you out to the west of Blackwood where there are plenty of fire trails and motorbike tracks. I've still got to fully explore this area. Hope this helps a bit.
Where were the hike a bike and descent photos out of interest?