The last section of Rangers is built like trail centre single track, fast and mostly relatively smooth. Above that is a few miles of loose rocks, some drops, nothing too crazy. Great fun though, pretty “alpine” for the UK.
But Health and Safety Mountain Bike directive 12.5.6 (2010 revised 2012) forbids the riding of Rangers by a sole mountain biker unless they have dual ply tires, 8″ travel and a note from their Mum.
It’s up to you, I’d ride it alone but might walk a couple of sections or stick on a big lid and make sure my phone was charged up and had a reception. But you wont be alone, it’s pretty popular.