For us, Williams Lake is the closest town with supplies. We travel in a generally northerly direction via various 'tracks' to we turn onto Chilko Lake Road, which ends up on Tatlayoko Lake road, which will in turn lead to Hwy 20. From there, it is all paved to Williams Lake.  

  Distance wise is not obscene but the 'tracks' i refer to can be a pain to maintain due to wash out and tree blow down etc. If that is the case it can significantly add to travel times. Winter can be good and bad depending on amount of snow or icy conditions etc. Typically, up until about January, winter driving is actually easier IMHO, as all the potholes/ditches are filled out.  We use heavy duty chains on the tires if it gets too slippery and/or too much snow, this can make for a really long drive due to having to travel much slower with chains on.