Calm down dear!
We did Nan Bield both ways- just an out and back due to daylight. I prefered it heading north- much techier descent. Really gets your heart going and a serious test of skill- think it’s the 2nd hardest big descent I’ve done after Ben Nevis. We rode perhaps 90% of the northern descent. The way back was nice and mellow and about as much fun but in a very different way.
The loughrigg route is very simple and very short- less than 10 miles- but it was meant to be a social ride. It takes the bridalway from Browhead Farm to Little Loughrigg, then North West along the road then right on the bridleway called Loughrigg Terrace back. A lot of fun in very little miles.