If you are thinking for treaking in March place's where u can enjoy snow
then I will suggest you to get membership of youth hostel
they are planning and organizing best treaking trip's
Some of the treks in North India where you can witness snow-
Triund trek
Kasol-Kheerganga trek
Kedarkanta trek
Chopta trek
Chadar trek
Gaumukh Tapovan trek
Hope it helps and do share your experience on Tripoto.
Hey, I have attached with this comment a snow trek package, you can click on it and find all the details about it. If you want to book this simply fill in your details and someone will get in touch with you