grum – Member
Too much road on Borrowdale Bash for me – does have one really good bit of gnar though.
I think some combination of Claife/Grizedale is probably the best purely in terms of riding. If you want extreme tech try Dollywagon Pike on Helvellyn.
Or Rossett Gill
Rossett Gill is bad enough with boots on and no bike!!
Agree with Grum about Claife/Grizedale, suggested route from me would be start in Ambleside, follow Loughrigg terrace before dropping down into Langdale/Elterwater, through Hodge Close, over Ambleside to Coniston road, over to Hawkshead, from Hawkshead Claife heights and back to Ambleside. (MBR January had the Ambleside portion of this route on its pull out cards, oddly ride it in the "wrong" direction".
Other options would be Coniston – Tilberthwaite – Hodge Close – Hawkshead – Grizedale – Coniston.
Neither of these extreme/technical, but superb day riding.