By train
Amtrak operates the California Zephyr Train (http://amtrak.com/trains/...), which goes from Emeryville, CA in the San Francisco Bay Area to Chicago, IL and makes a stop in Truckee.
By Bus Or Shuttle
There is an Amtrak train station in Truckee, California, and bus service from various carriers there to points around the lake. Amtrak offers a combined bus/train service from San Francisco, California via the Emeryville, California stop to South Lake Tahoe. Many ski resorts offer bus and shuttle rides from certain pick-up locations in the San Francisco Bay Area, Sacramento, Reno, Truckee or from hotels in the Lake Tahoe region. Availability, pick-up locations, schedules and rates vary widely depending on the resort you want to go to. See the Do section below for a list of ski resorts, and check their website or call their office to see what your options are.