OK here are some maps off the Google to give a reasonably accurate route for the Saturday drive to Danggali, and the choices for Sunday. Google can be a bit difficult, not showing routes that are possible. So I have had to 'jump' the gaps by starting a new map.
There is a choice of routes on Sunday. As I said before, some might want to be home Sunday night, so they can either head for Adelaide from Renmark, or if they want to see a bit of the Sunset country, drive as far as Pheeney's Track, and head out at Meribah.
Those that want to keep treking can keep going down the Border track to Pinnaroo, grab some tea at the roadhouse and refuel, and then another 20km down to camp for the night at Pine Hut Soak. Then Monday morning do either the top half the Border Track, the one way section, and then head out to Lameroo and back to Adelaide, or if they have plenty of energy left in their tanks, go all the way down to Bordertown, and then back home up the Dukes Highway. But that might be overdoing it a bit after three days on the road!
So, here are the maps . . . First, Friday night up to Burra Gorge.
That's about 150km from Adelaide GPO, or maybe 200km from Aldinga Beach;
Adelaide SA to Worlds End Gorge Rd - Google Maps
25km into Burra to refuel Saturday morning. Servo opens at 7.30. I know they have LPG. Will need to check if they have diesel. I think they do, but will need to check.
Worlds End Creek SA to Ludgvan St - Google Maps
Then out to Red Banks Conservation Park to meet Geoff and HM Jean. Up past Mongalata to a ford across a creek. Google stops there, but I have crossed that ford two or three times now. Not a problem.
That's about 50km form Burra to the ford.
Burra SA to Mawson Trl - Google Maps
From the ford, out to Collinsville ( a couple of short photo stops along this section ), up to Mallett homestead, I think deserted, across to Ketchowla ( called Pine Creek by mistake on the Google ), then we could try an interesting 'detour' up the Ketchowla road, along a valley, in hilly county. I just saw this track on the map tonight. Looks interesting. Or could just head out into the 'flat country' from Ketchowla. Point F is Braemar homestead. I dropped into Braemar to talk about our trip on the way home from the Gawler Ranges trip. The lady said the track heading east from Braemar is no longer usable. It is a very rough track that has had a non gated fence built across it. So even the farmers can't use it now. She said it would be a lot quicker to just drive up to Lillydale and turn east there anyway.
Point G is a nice wide creek with large gum trees. Could be a good spot to stop for lunch. Point H is the entrance to the Danggali Conservation Park.
That's 222km form the ford to the Dangalli entrance.
Its about another 50km south east to the Hyperno Homestead/campgrounds for Saturday night. So total km for the day, from Burra Gorge, is about 350km. I think we might be arriving pretty late in the afternoon. Might even be a bit after dark.
Mawson Trl to Unknown road - Google Maps
Sunday morning we head out of the Danggali and into the Chowilla park, and the flood plains around the Chowilla creek. A bit of a sticky beak through the Chowilla game reserve to have a look at the creek and check out the camp sites, and down into Renmark to refuel and pick up an ice-cream. ( For me that is code for a FUIC! ).
That would be about 100km, including the wandering around the Chowilla Game Reserve and the Chowilla Creek.
Renmark SA to -33.596033, 141.001625 - Google Maps
The quick way home, if you live 'down south', is about 310km form Renmark.
Renmark SA to Aldinga Beach Rd - Google Maps
Or for those that want more . . . We could head out into the Sunset country, just over the border on the Sturt Highway, about 5km past the Yamba roadhouse. Head down some interesting tracks to visit some old farmhouse ruins, a meteor crater, and another farmhouse in the mallee scrub that has been set up as camp ground, with toilets. I think you can stay in the little farmhouse if you wanted to.
Then some nice soft sandy tracks down the border track to Pinnaroo. Some might want to head for Adelaide when we cross Pheeney's Track, about 20km south of that camp ground at the farmhouse. See the last map for the route home to the southern suburbs from Pheeney's Track, via Meribah.
Or, keep heading down to Pinnaroo. Again, choices to be had. head for home from Pinnaroo, or camp at the lovely Pine Hut Soak, 20km south of Pinnaroo.
Then head back to Adelaide on Monday morning, or try the Border Track. As I said before, half the track, or a bit less, and head out at the Shaugh track, back up to Lameroo, and home, or keep on all the way to Bordertown!
Its about 190km from Renmark to PineHut Soak campgrounds.
Renmark SA to Rosy Pine Rd - Google Maps
This map shows the route home from a bit east of Meribah, that is the first town out of the Sunset country on the end of Pheeney's Track. About 280km.
Unknown road to Aldinga Beach Rd - Google Maps
Hope all this helps with your planning.