Various experiences, walks, tours near Lecco and the branch of Lake Como in direction of Lecco:
https://leccotourism.it/esperienze/
https://leccotourism.it/wp-content/uploads/2025/04/esperienza-primavera-ENG-singole.pdf
See also here for a collection of historical itineraries and places to visit.
The Pian dei Resinelli offers both easy trails with beautiful views of Lake Como, as well as hikes up the Grigna mountains. See activities here, and search for Grigna and Grignetta trails on your favourite app for hiking.
A page for places to visit, and what to eat, in nearby Valsassina.
A starting page about the Grigne park and peaks.