The Lakes and easy riding are a bit incompatible! However, there’s a nice loop that you can start from either Near Sawrey or Red Nab (parking here) on the west side of Windermere that takes in Claife Heights. It’s a really nice area to ride of a summer’s eveing with beautiful views.
If you start at Red Nab you can cycle down the side of Windermere to Belt Ash Coppice and then up the bridleway to Far Sawrey then up the road to Near Sawrey and up onto Claife Heights on the bridleway. There are several routes down from Long Height. It’s not a long ride and you could extend it by taking in Grizedale Forest as already mentioned but it’s nice to do as a short evening ride. It’s still hilly and some of the hills are steep but it’s about the easiest access to decent views that I can think of.
The ride over Loughrigg Fell from Brow Head Farm, just outside Ambleside, to Tarn Foot is superb but the climb is pretty steep. None of it’s technical, just steep and relatively long. You can carry on up to Arnside and Sunny Brow (which is a lot more challenging on loose rocks) and down to Knipe Fold (great descent) and back round over Claife Heights.
Barry