In Himachal, these are some of the best treks

Hampta Pass Trek, Kheerganga Trek, Malana Village Trek, Jakhu Temple Trek, Prashar Lake Trek, Triund Trek, Bhrigu Lake Trek, Pin Parvati Pass Trek, Kareri Lake Trek.

In Uttarakhand 

Nag Tibba Trek, Kedarkantha Trek, Dayra Bugyal Trek, Deoriatal - Chandrashila Trek, Valley Of Flowers Trek.

So these are some of the best trek you can go for.