Outside of the winter months, there are plenty of bike trails and walking paths to get around the area. Many hostels have bike rental which helps if you are a little bit outside of Hakuba proper.
If you are based around Kamishiro station, you are on the main rail line and road so a trip into Hakuba proper is only five minutes by JR or by Bus.
The Shuttle Bus "Genki-Go" runs from December through March in the evenings from 17:00. Three lines run throughout Hakuba for 300yen a ride.